Suggest a mnemonic (in Word Problems)
Posted on 2024-04-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2024-04-13 by Ady TZIDON (No Solution Yet, 3 Comments)
All-distinct-integer set (in Numbers)
Posted on 2024-04-11 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2024-04-11 by Ady TZIDON (Solution Posted, 2 Comments)
A cube within a cone (in Just Math) Rating: 4.00
Posted on 2024-04-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2024-04-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Happy birthday, man (in Word Problems)
Posted on 2024-04-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2024-04-07 by Ady TZIDON (No Solution Yet, 2 Comments)
No squareless triplets (in Just Math)
Posted on 2024-03-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2024-03-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Minimizing ones (in Just Math) Rating: 5.00
Posted on 2024-03-20 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2024-03-20 by Ady TZIDON (No Solution Yet, 4 Comments)
Averaging factorials (in Just Math)
Posted on 2024-03-16 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2024-03-16 by Ady TZIDON (No Solution Yet, 2 Comments)
Non-conformist choice (in Probability)
Posted on 2024-03-14 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2024-03-14 by Ady TZIDON (Solution Posted, 4 Comments)
No business like your business (in Just Math)
Posted on 2024-03-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2024-03-12 by Ady TZIDON (No Solution Yet, 1 Comments)
A formal proof required (in Sequences)
Posted on 2024-03-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2024-03-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Evaluate the smallest value (in Just Math)
Posted on 2024-03-09 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2024-03-09 by Ady TZIDON (No Solution Yet, 2 Comments)
Define a rational function (in Probability)
Posted on 2024-03-04 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2024-03-04 by Ady TZIDON (Solution Posted, 5 Comments)
Mostly 52 (in Probability) Rating: 5.00
Posted on 2024-02-27 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2024-02-27 by Ady TZIDON (No Solution Yet, 5 Comments)
Equal averages (in Just Math) Rating: 3.00
Posted on 2024-02-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2024-02-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Define the members of S (in Just Math)
Posted on 2024-02-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2024-02-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Not equal but fair (in Just Math) Rating: 4.00
Posted on 2024-02-12 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2024-02-12 by Ady TZIDON (Solution Posted, 5 Comments)
Some special states (in Word Problems)
Posted on 2024-02-06 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2024-02-06 by Ady TZIDON (Solution Posted, 6 Comments)
A perfect appearance (in Probability)
Posted on 2024-02-06 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2024-02-06 by Ady TZIDON (Solution Posted, 2 Comments)
Twice ten plus forty (in Just Math) Rating: 5.00
Posted on 2024-01-31 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2024-01-31 by Ady TZIDON (Solution Posted, 3 Comments)
The First Lady (in Probability) Rating: 5.00
Posted on 2024-01-30 by Ady TZIDON (No Solution Yet, 12 Comments)
Posted on 2024-01-30 by Ady TZIDON (No Solution Yet, 12 Comments)
Many approaches to solve it (in Just Math)
Posted on 2024-01-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2024-01-18 by Ady TZIDON (No Solution Yet, 2 Comments)
That’s ENTERTAINMENT (in Word Problems) Rating: 5.00
Posted on 2024-01-14 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2024-01-14 by Ady TZIDON (Solution Posted, 5 Comments)
4-digit number (in Numbers) Rating: 5.00
Posted on 2024-01-03 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2024-01-03 by Ady TZIDON (No Solution Yet, 4 Comments)
Words like swords (in Word Problems)
Posted on 2024-01-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2024-01-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Filtering a phrase (in Word Problems)
Posted on 2023-12-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2023-12-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Price estimation (in General) Rating: 3.00
Posted on 2023-12-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-12-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Input your text (in Word Problems) Rating: 4.00
Posted on 2023-12-10 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-12-10 by Ady TZIDON (Solution Posted, 3 Comments)
Who gave what to whom? (in Logic) Rating: 4.00
Posted on 2023-11-28 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2023-11-28 by Ady TZIDON (Solution Posted, 7 Comments)
Find all possible pairs (in Just Math)
Posted on 2023-11-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-11-19 by Ady TZIDON (No Solution Yet, 2 Comments)
O, sleep! It is a gentle thing... (in Logic)
Posted on 2023-11-14 by Ady TZIDON (Solution Posted, 0 Comments)
Posted on 2023-11-14 by Ady TZIDON (Solution Posted, 0 Comments)
Those were the days, my friend (in General) Rating: 5.00
Posted on 2023-11-04 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-11-04 by Ady TZIDON (No Solution Yet, 3 Comments)
Count the acceptable permutations (in Numbers)
Posted on 2023-10-30 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2023-10-30 by Ady TZIDON (Solution Posted, 4 Comments)
One letter missing (in Word Problems)
Posted on 2023-10-22 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-10-22 by Ady TZIDON (Solution Posted, 3 Comments)
Introducing Nova numbers (in General) Rating: 1.00
Posted on 2023-10-06 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2023-10-06 by Ady TZIDON (No Solution Yet, 5 Comments)
One number missing (in Numbers) Rating: 4.00
Posted on 2023-09-25 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-09-25 by Ady TZIDON (No Solution Yet, 3 Comments)
Inserting a number into 2023 (in Numbers)
Posted on 2023-09-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-09-20 by Ady TZIDON (No Solution Yet, 2 Comments)
A cubic equation (in Just Math) Rating: 4.00
Posted on 2023-09-14 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-09-14 by Ady TZIDON (No Solution Yet, 2 Comments)
Minimum of an expression (in Just Math) Rating: 4.00
Posted on 2023-09-12 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-09-12 by Ady TZIDON (No Solution Yet, 3 Comments)
Unique and restricted (in Word Problems) Rating: 5.00
Posted on 2023-09-06 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2023-09-06 by Ady TZIDON (No Solution Yet, 10 Comments)
Powerful Parade (in Numbers) Rating: 4.00
Posted on 2023-09-03 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2023-09-03 by Ady TZIDON (No Solution Yet, 5 Comments)
Only one real answer (in Just Math) Rating: 5.00
Posted on 2023-09-01 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2023-09-01 by Ady TZIDON (Solution Posted, 2 Comments)
Ten not welcomed... (in Probability)
Posted on 2023-08-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-08-30 by Ady TZIDON (No Solution Yet, 2 Comments)
It is not 49 (in General) Rating: 4.00
Posted on 2023-08-26 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-08-26 by Ady TZIDON (Solution Posted, 3 Comments)
Counting triplets (in Numbers) Rating: 5.00
Posted on 2023-08-22 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-08-22 by Ady TZIDON (Solution Posted, 3 Comments)
Find this 4C4V word (in Word Problems)
Posted on 2023-08-19 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2023-08-19 by Ady TZIDON (Solution Posted, 6 Comments)
Explore a diophantine equation (in Just Math)
Posted on 2023-08-14 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2023-08-14 by Ady TZIDON (No Solution Yet, 6 Comments)
Four Powers (in Just Math) Rating: 4.00
Posted on 2023-08-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-08-10 by Ady TZIDON (No Solution Yet, 2 Comments)
3 perfect squares (in Just Math) Rating: 3.00
Posted on 2023-08-01 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2023-08-01 by Ady TZIDON (No Solution Yet, 6 Comments)
Restricted ternary numbers (in Numbers)
Posted on 2023-07-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-07-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Maharaja's diamonds (in Just Math) Rating: 5.00
Posted on 2023-07-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-07-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Find the matching word (in General)
Posted on 2023-07-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2023-07-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Recover the faulty word (in Word Problems)
Posted on 2023-06-29 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2023-06-29 by Ady TZIDON (No Solution Yet, 7 Comments)
Try a tricky solution (in Just Math)
Posted on 2023-06-28 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2023-06-28 by Ady TZIDON (No Solution Yet, 6 Comments)
The Count of Integers (in Numbers) Rating: 5.00
Posted on 2023-06-12 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-06-12 by Ady TZIDON (Solution Posted, 3 Comments)
The determinant is divisible by three (in Just Math)
Posted on 2023-06-05 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2023-06-05 by Ady TZIDON (No Solution Yet, 5 Comments)
Unsolved (so far) problem (in General)
Posted on 2023-05-31 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-05-31 by Ady TZIDON (No Solution Yet, 3 Comments)
Quick estimate (in Numbers) Rating: 1.00
Posted on 2023-05-24 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2023-05-24 by Ady TZIDON (No Solution Yet, 11 Comments)
He gave me S and asked for X (in Just Math) Rating: 3.00
Posted on 2023-05-23 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-05-23 by Ady TZIDON (No Solution Yet, 4 Comments)
My pledge: IOU (in Cryptography) Rating: 5.00
Posted on 2023-05-19 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2023-05-19 by Ady TZIDON (Solution Posted, 2 Comments)
Similar to Find My Number (in Probability)
Posted on 2023-05-15 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2023-05-15 by Ady TZIDON (Solution Posted, 6 Comments)
Erase as much as needed (in Just Math) Rating: 5.00
Posted on 2023-05-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-05-11 by Ady TZIDON (Solution Posted, 3 Comments)
High powers involved (in Just Math)
Posted on 2023-05-09 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2023-05-09 by Ady TZIDON (No Solution Yet, 6 Comments)
Wanted: the value(s) of the polynomial (in Just Math)
Posted on 2023-05-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2023-05-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Counting the wounded (in Just Math)
Posted on 2023-05-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-05-03 by Ady TZIDON (No Solution Yet, 2 Comments)
A stretch of 8… or more… (in Numbers)
Posted on 2023-04-30 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2023-04-30 by Ady TZIDON (Solution Posted, 1 Comments)
A Complex Equation (in Just Math) Rating: 4.00
Posted on 2023-04-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-04-28 by Ady TZIDON (No Solution Yet, 4 Comments)
A polynomial equation (in Just Math)
Posted on 2023-04-26 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2023-04-26 by Ady TZIDON (No Solution Yet, 8 Comments)
Calling for ALL solutions (in Just Math) Rating: 3.00
Posted on 2023-04-24 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2023-04-24 by Ady TZIDON (Solution Posted, 2 Comments)
Triple seven power (in Just Math) Rating: 3.00
Posted on 2023-04-21 by Ady TZIDON (No Solution Yet, 14 Comments)
Posted on 2023-04-21 by Ady TZIDON (No Solution Yet, 14 Comments)
Function of a function (in Just Math)
Posted on 2023-04-14 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-04-14 by Ady TZIDON (No Solution Yet, 4 Comments)
Nice infinite series (in Sequences)
Posted on 2023-04-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-04-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Conjugate and radical equation (in Just Math)
Posted on 2023-04-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-04-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Basic trigo equation (in Just Math)
Posted on 2023-04-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-04-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Carpe Diem (in Numbers) Rating: 4.00
Posted on 2023-04-07 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2023-04-07 by Ady TZIDON (No Solution Yet, 5 Comments)
Seems unlikely, but is not … (in Just Math)
Posted on 2023-04-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-04-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Factorials galore (in Sequences) Rating: 5.00
Posted on 2023-04-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-04-04 by Ady TZIDON (No Solution Yet, 2 Comments)
52-card lottery (in Probability) Rating: 5.00
Posted on 2023-03-29 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2023-03-29 by Ady TZIDON (No Solution Yet, 11 Comments)
Three sins (in Just Math) Rating: 4.00
Posted on 2023-03-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2023-03-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Fifth Powers (in Just Math) Rating: 4.00
Posted on 2023-03-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-03-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Two ways to solve (in Just Math) Rating: 4.00
Posted on 2023-03-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-03-20 by Ady TZIDON (No Solution Yet, 3 Comments)
3 circles in a rectangle (in Geometry) Rating: 5.00
Posted on 2023-03-16 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-03-16 by Ady TZIDON (No Solution Yet, 2 Comments)
Sum of two squares (in Numbers) Rating: 5.00
Posted on 2023-03-14 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-03-14 by Ady TZIDON (No Solution Yet, 4 Comments)
2 square roots (in Just Math) Rating: 4.00
Posted on 2023-03-12 by Ady TZIDON (No Solution Yet, 14 Comments)
Posted on 2023-03-12 by Ady TZIDON (No Solution Yet, 14 Comments)
A simple p&p equation (in Just Math)
Posted on 2023-03-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-03-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Two vending machines (in Probability)
Posted on 2023-03-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-03-02 by Ady TZIDON (No Solution Yet, 2 Comments)
WG’s quintuple (in Numbers) Rating: 4.00
Posted on 2023-02-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2023-02-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Name the base (in Just Math) Rating: 4.00
Posted on 2023-02-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2023-02-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Prisons foes (in Word Problems) Rating: 5.00
Posted on 2023-02-02 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2023-02-02 by Ady TZIDON (No Solution Yet, 7 Comments)
Lynch-Bell numbers (in Numbers) Rating: 5.00
Posted on 2023-01-27 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2023-01-27 by Ady TZIDON (Solution Posted, 3 Comments)
1 2 3 4. How high is your score? (in Numbers)
Posted on 2023-01-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2023-01-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Bless you, Blaise! (in Probability)
Posted on 2022-12-31 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2022-12-31 by Ady TZIDON (No Solution Yet, 2 Comments)
A quadruple gift for the N.Y. (in Numbers)
Posted on 2022-12-28 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2022-12-28 by Ady TZIDON (Solution Posted, 8 Comments)
Take it EZ (in Just Math) Rating: 5.00
Posted on 2022-12-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2022-12-13 by Ady TZIDON (No Solution Yet, 3 Comments)
All vowels disclosed (in Word Problems)
Posted on 2022-11-12 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2022-11-12 by Ady TZIDON (No Solution Yet, 5 Comments)
123…9 door to door (in Sequences) Rating: 5.00
Posted on 2022-10-27 by Ady TZIDON (Solution Posted, 27 Comments)
Posted on 2022-10-27 by Ady TZIDON (Solution Posted, 27 Comments)
Acronyms galore (in General) Rating: 4.00
Posted on 2022-07-26 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2022-07-26 by Ady TZIDON (Solution Posted, 3 Comments)
381654729 (in Just Math) Rating: 2.50
Posted on 2022-07-23 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2022-07-23 by Ady TZIDON (No Solution Yet, 6 Comments)
A square deal (in Sequences) Rating: 3.00
Posted on 2022-07-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2022-07-18 by Ady TZIDON (No Solution Yet, 4 Comments)
3 out of 5 (in Just Math) Rating: 5.00
Posted on 2022-07-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2022-07-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Clairvoyance (in Tricks) Rating: 5.00
Posted on 2022-07-11 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2022-07-11 by Ady TZIDON (Solution Posted, 6 Comments)
Euler was wrong (in Just Math) Rating: 5.00
Posted on 2022-07-06 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2022-07-06 by Ady TZIDON (Solution Posted, 3 Comments)
Pro and con (in Word Problems) Rating: 5.00
Posted on 2022-07-03 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2022-07-03 by Ady TZIDON (No Solution Yet, 9 Comments)
Same digits II (in Probability) Rating: 4.00
Posted on 2022-06-17 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2022-06-17 by Ady TZIDON (Solution Posted, 3 Comments)
Stay out of the jungle! (in Riddles) Rating: 4.50
Posted on 2022-06-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2022-06-11 by Ady TZIDON (Solution Posted, 3 Comments)
Powers of 2 vs some factorials (in Numbers) Rating: 3.50
Posted on 2022-06-08 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2022-06-08 by Ady TZIDON (Solution Posted, 5 Comments)
Who knows (in Riddles) Rating: 3.00
Posted on 2022-06-05 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2022-06-05 by Ady TZIDON (Solution Posted, 2 Comments)
Last house on the street (in Just Math) Rating: 4.00
Posted on 2022-05-31 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2022-05-31 by Ady TZIDON (No Solution Yet, 7 Comments)
What base? (in Just Math) Rating: 4.00
Posted on 2022-05-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2022-05-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Wise Guy's sons (in Just Math) Rating: 4.00
Posted on 2022-05-25 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2022-05-25 by Ady TZIDON (Solution Posted, 4 Comments)
Equally divided (in Numbers) Rating: 3.00
Posted on 2022-05-22 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2022-05-22 by Ady TZIDON (No Solution Yet, 3 Comments)
Only integer answers (in Just Math) Rating: 5.00
Posted on 2022-05-19 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2022-05-19 by Ady TZIDON (Solution Posted, 9 Comments)
Completing factorial (in Numbers) Rating: 4.00
Posted on 2022-05-11 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2022-05-11 by Ady TZIDON (Solution Posted, 1 Comments)
2 incompatible words (in Word Problems) Rating: 5.00
Posted on 2022-05-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2022-05-09 by Ady TZIDON (No Solution Yet, 3 Comments)
No doubles (in Logic) Rating: 4.50
Posted on 2022-05-02 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2022-05-02 by Ady TZIDON (Solution Posted, 10 Comments)
Counting words (in Just Math) Rating: 5.00
Posted on 2022-04-27 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2022-04-27 by Ady TZIDON (No Solution Yet, 7 Comments)
Simple set (in Just Math) Rating: 4.00
Posted on 2022-04-25 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2022-04-25 by Ady TZIDON (No Solution Yet, 2 Comments)
L OR H (in Weights and Scales) Rating: 3.00
Posted on 2022-04-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2022-04-18 by Ady TZIDON (No Solution Yet, 4 Comments)
From a to z (in Just Math) Rating: 4.50
Posted on 2022-04-17 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2022-04-17 by Ady TZIDON (No Solution Yet, 7 Comments)
225 as a factor (in Numbers) Rating: 5.00
Posted on 2022-04-12 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2022-04-12 by Ady TZIDON (Solution Posted, 7 Comments)
A Kiss solution (in General) Rating: 3.50
Posted on 2022-04-04 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2022-04-04 by Ady TZIDON (No Solution Yet, 9 Comments)
Did Bobby err? (in Numbers) Rating: 5.00
Posted on 2022-04-02 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2022-04-02 by Ady TZIDON (Solution Posted, 5 Comments)
Slim chance? (in Probability) Rating: 4.00
Posted on 2022-03-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2022-03-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Attributed to Ramanujan (in Just Math) Rating: 4.00
Posted on 2022-03-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2022-03-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Some inflation ! (in Numbers) Rating: 5.00
Posted on 2022-03-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2022-03-24 by Ady TZIDON (No Solution Yet, 4 Comments)
A multiple of 42 (in Just Math) Rating: 5.00
Posted on 2022-03-23 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2022-03-23 by Ady TZIDON (Solution Posted, 6 Comments)
Q and A (in Just Math) Rating: 5.00
Posted on 2022-03-06 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2022-03-06 by Ady TZIDON (Solution Posted, 2 Comments)
Very peculiar feature ! (in Numbers) Rating: 5.00
Posted on 2022-02-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2022-02-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Powerful portions (in Games) Rating: 4.00
Posted on 2022-02-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2022-02-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Why? a quickie (in Numbers) Rating: 5.00
Posted on 2022-02-06 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2022-02-06 by Ady TZIDON (No Solution Yet, 4 Comments)
If Victor’s X-ray… (in Word Problems) Rating: 5.00
Posted on 2022-02-05 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2022-02-05 by Ady TZIDON (Solution Posted, 6 Comments)
Not-so-easy sequences (in Sequences) Rating: 5.00
Posted on 2022-02-04 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2022-02-04 by Ady TZIDON (Solution Posted, 7 Comments)
Pandiv 143 (in Numbers) Rating: 4.00
Posted on 2022-01-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2022-01-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Find this word (in Word Problems) Rating: 2.33
Posted on 2022-01-06 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2022-01-06 by Ady TZIDON (Solution Posted, 7 Comments)
Either way (in Numbers) Rating: 5.00
Posted on 2022-01-05 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2022-01-05 by Ady TZIDON (No Solution Yet, 8 Comments)
Believe it or not 2 (in Numbers) Rating: 4.00
Posted on 2021-12-30 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2021-12-30 by Ady TZIDON (Solution Posted, 2 Comments)
KISS solution (in Just Math) Rating: 5.00
Posted on 2021-12-29 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2021-12-29 by Ady TZIDON (Solution Posted, 8 Comments)
Choose a job you like… (in Word Problems) Rating: 5.00
Posted on 2021-12-26 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2021-12-26 by Ady TZIDON (No Solution Yet, 7 Comments)
6 out of 20 (in Cryptography) Rating: 5.00
Posted on 2021-12-23 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2021-12-23 by Ady TZIDON (No Solution Yet, 6 Comments)
Back to basics (in Just Math) Rating: 5.00
Posted on 2021-12-23 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2021-12-23 by Ady TZIDON (Solution Posted, 4 Comments)
Add a Z-word (in General) Rating: 4.00
Posted on 2021-12-19 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-12-19 by Ady TZIDON (No Solution Yet, 4 Comments)
5 peaceful rooks (in Just Math) Rating: 3.50
Posted on 2021-12-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-12-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Text to math to text (in General) Rating: 4.33
Posted on 2021-12-11 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2021-12-11 by Ady TZIDON (No Solution Yet, 9 Comments)
ABBA words a.k.a. Test #12: (in Word Problems) Rating: 4.00
Posted on 2021-12-07 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-12-07 by Ady TZIDON (No Solution Yet, 3 Comments)
Mas o menos vs comme il faut (in Just Math) Rating: 4.00
Posted on 2021-12-04 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-12-04 by Ady TZIDON (No Solution Yet, 3 Comments)
Count the trailing zeros (in Just Math) Rating: 4.00
Posted on 2021-11-30 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-11-30 by Ady TZIDON (No Solution Yet, 4 Comments)
Prove or verify (in Just Math) Rating: 4.00
Posted on 2021-11-18 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2021-11-18 by Ady TZIDON (No Solution Yet, 1 Comments)
What digit is there? (in Just Math) Rating: 3.00
Posted on 2021-11-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-11-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Tea-Time TauTology (in Word Problems) Rating: 5.00
Posted on 2021-11-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-11-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Pax vobiscum (in General) Rating: 5.00
Posted on 2021-11-05 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-11-05 by Ady TZIDON (No Solution Yet, 4 Comments)
Left/Right side story (in Word Problems) Rating: 4.00
Posted on 2021-10-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2021-10-25 by Ady TZIDON (No Solution Yet, 1 Comments)
....and the 100th member is (in Sequences) Rating: 3.33
Posted on 2021-10-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-10-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Expo 7629 (in Numbers) Rating: 4.00
Posted on 2021-09-27 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2021-09-27 by Ady TZIDON (No Solution Yet, 7 Comments)
Bung (in Word Problems) Rating: 3.00
Posted on 2021-09-08 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2021-09-08 by Ady TZIDON (Solution Posted, 3 Comments)
The 10th distance (in Just Math) Rating: 4.50
Posted on 2021-09-06 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2021-09-06 by Ady TZIDON (No Solution Yet, 8 Comments)
Bishops galore (in Games) Rating: 4.00
Posted on 2021-09-01 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2021-09-01 by Ady TZIDON (No Solution Yet, 6 Comments)
SOD revealed (in General) Rating: 5.00
Posted on 2021-08-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-08-26 by Ady TZIDON (No Solution Yet, 3 Comments)
2 neighbours create a square (in Numbers) Rating: 4.00
Posted on 2021-08-19 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2021-08-19 by Ady TZIDON (No Solution Yet, 9 Comments)
My two lamps and I (in Cryptography) Rating: 3.50
Posted on 2021-08-17 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2021-08-17 by Ady TZIDON (Solution Posted, 3 Comments)
A monthly puzzle (in Cryptography) Rating: 5.00
Posted on 2021-08-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-08-06 by Ady TZIDON (No Solution Yet, 2 Comments)
A coprime couple (in Numbers) Rating: 4.00
Posted on 2021-08-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-08-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Words, words and words (in Word Problems) Rating: 5.00
Posted on 2021-07-21 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-07-21 by Ady TZIDON (No Solution Yet, 4 Comments)
Special dates (in Science) Rating: 4.00
Posted on 2021-07-06 by Ady TZIDON (No Solution Yet, 43 Comments)
Posted on 2021-07-06 by Ady TZIDON (No Solution Yet, 43 Comments)
Distinct routes (in Numbers) Rating: 5.00
Posted on 2021-06-24 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2021-06-24 by Ady TZIDON (No Solution Yet, 10 Comments)
Three random squares (in Just Math) Rating: 5.00
Posted on 2021-06-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-06-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Prime count (in Numbers) Rating: 4.00
Posted on 2021-06-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-06-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Maximal product requested (in Just Math)
Posted on 2021-06-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-06-15 by Ady TZIDON (No Solution Yet, 3 Comments)
What is the last number? (in Numbers) Rating: 3.00
Posted on 2021-06-14 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2021-06-14 by Ady TZIDON (No Solution Yet, 6 Comments)
Double negative (in Numbers) Rating: 5.00
Posted on 2021-06-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-06-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Gambler’s dilemma (in Probability) Rating: 3.00
Posted on 2021-05-28 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2021-05-28 by Ady TZIDON (No Solution Yet, 8 Comments)
Four word classes (in Word Problems) Rating: 4.00
Posted on 2021-05-27 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2021-05-27 by Ady TZIDON (No Solution Yet, 5 Comments)
Eleven as mandatory divider (in Sequences)
Posted on 2021-05-24 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2021-05-24 by Ady TZIDON (No Solution Yet, 5 Comments)
Square creates square (in Numbers) Rating: 5.00
Posted on 2021-05-18 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2021-05-18 by Ady TZIDON (Solution Posted, 9 Comments)
A Country, a City and a pamphlet (in Numbers) Rating: 4.00
Posted on 2021-05-11 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-05-11 by Ady TZIDON (No Solution Yet, 4 Comments)
Ones or twos II (in Numbers) Rating: 4.00
Posted on 2021-05-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-05-10 by Ady TZIDON (No Solution Yet, 2 Comments)
The incompatible food triad (in General)
Posted on 2021-04-27 by Ady TZIDON (No Solution Yet, 16 Comments)
Posted on 2021-04-27 by Ady TZIDON (No Solution Yet, 16 Comments)
Common and tasty (in Word Problems) Rating: 5.00
Posted on 2021-04-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-04-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Time to rhyme (in Numbers) Rating: 3.00
Posted on 2021-04-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-04-13 by Ady TZIDON (No Solution Yet, 2 Comments)
7.1.4 , my friend (in Numbers) Rating: 5.00
Posted on 2021-03-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2021-03-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Only in USA (in General) Rating: 5.00
Posted on 2021-03-29 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2021-03-29 by Ady TZIDON (No Solution Yet, 8 Comments)
Routes' routine (in Logic) Rating: 4.00
Posted on 2021-03-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2021-03-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Don't walk! (in General) Rating: 4.33
Posted on 2021-03-24 by Ady TZIDON (No Solution Yet, 16 Comments)
Posted on 2021-03-24 by Ady TZIDON (No Solution Yet, 16 Comments)
With or without (in Numbers) Rating: 4.50
Posted on 2021-03-22 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2021-03-22 by Ady TZIDON (No Solution Yet, 5 Comments)
The fibbons (in Numbers) Rating: 4.00
Posted on 2021-03-16 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2021-03-16 by Ady TZIDON (No Solution Yet, 6 Comments)
Out of “Pillow Problems” (in Numbers) Rating: 4.00
Posted on 2021-03-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-03-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Words' insides (in Word Problems) Rating: 4.00
Posted on 2021-03-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-03-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Defining a triangle. (in Geometry) Rating: 4.00
Posted on 2021-03-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-03-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Job interview (in Logic) Rating: 3.00
Posted on 2021-03-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-03-02 by Ady TZIDON (No Solution Yet, 3 Comments)
A drill to remember (in Geometry) Rating: 4.00
Posted on 2021-03-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-03-01 by Ady TZIDON (No Solution Yet, 2 Comments)
The class of ‘55’ (in Numbers) Rating: 5.00
Posted on 2021-02-27 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2021-02-27 by Ady TZIDON (Solution Posted, 4 Comments)
Sport above all (in Just Math) Rating: 3.00
Posted on 2021-02-22 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-02-22 by Ady TZIDON (No Solution Yet, 4 Comments)
Less than 100 (in Numbers) Rating: 4.00
Posted on 2021-02-14 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-02-14 by Ady TZIDON (No Solution Yet, 3 Comments)
As close as possible (in Numbers) Rating: 3.00
Posted on 2021-02-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2021-02-11 by Ady TZIDON (No Solution Yet, 3 Comments)
As time goes by (in Sequences) Rating: 2.33
Posted on 2021-02-09 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2021-02-09 by Ady TZIDON (No Solution Yet, 7 Comments)
Mission 55 (in Numbers) Rating: 4.00
Posted on 2021-02-08 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2021-02-08 by Ady TZIDON (No Solution Yet, 6 Comments)
The nearness of you (in Logic) Rating: 3.00
Posted on 2021-02-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-02-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Transformation (in Word Problems) Rating: 3.00
Posted on 2021-02-04 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2021-02-04 by Ady TZIDON (Solution Posted, 3 Comments)
Provide dimensions (in Geometry) Rating: 2.50
Posted on 2021-02-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2021-02-03 by Ady TZIDON (No Solution Yet, 1 Comments)
374 1493 I9 243 35 85M4 (in Just Math) Rating: 5.00
Posted on 2021-01-30 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2021-01-30 by Ady TZIDON (No Solution Yet, 4 Comments)
A tinted train (in Logic) Rating: 4.00
Posted on 2021-01-19 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2021-01-19 by Ady TZIDON (Solution Posted, 3 Comments)
3 to 6 letters (in Word Problems) Rating: 4.00
Posted on 2021-01-16 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2021-01-16 by Ady TZIDON (No Solution Yet, 9 Comments)
Reverse engineering (in Tricks) Rating: 3.00
Posted on 2021-01-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2021-01-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Welcome, 2021 (in Cryptography) Rating: 3.00
Posted on 2020-12-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2020-12-31 by Ady TZIDON (No Solution Yet, 1 Comments)
3 and 3 and... (in Numbers) Rating: 3.00
Posted on 2020-12-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2020-12-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Shortest way to a million (in Numbers) Rating: 4.50
Posted on 2020-12-03 by Ady TZIDON (No Solution Yet, 15 Comments)
Posted on 2020-12-03 by Ady TZIDON (No Solution Yet, 15 Comments)
2 absent digits (in Numbers) Rating: 2.00
Posted on 2020-11-28 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2020-11-28 by Ady TZIDON (No Solution Yet, 6 Comments)
5 token coverage (in Logic) Rating: 3.00
Posted on 2020-10-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2020-10-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Look b4 U leap (in Logic) Rating: 3.00
Posted on 2020-10-02 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2020-10-02 by Ady TZIDON (Solution Posted, 8 Comments)
A proverb (in Word Problems) Rating: 5.00
Posted on 2020-09-25 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2020-09-25 by Ady TZIDON (Solution Posted, 4 Comments)
No fractions (in Just Math) Rating: 4.00
Posted on 2020-09-19 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-09-19 by Ady TZIDON (No Solution Yet, 4 Comments)
hiDDen maMMals (in Word Problems) Rating: 2.00
Posted on 2020-09-16 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2020-09-16 by Ady TZIDON (Solution Posted, 2 Comments)
Close neighbor (in General) Rating: 3.00
Posted on 2020-09-14 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2020-09-14 by Ady TZIDON (No Solution Yet, 8 Comments)
Cities, Countries and Colors (in Word Problems) Rating: 4.00
Posted on 2020-09-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2020-09-06 by Ady TZIDON (No Solution Yet, 2 Comments)
WG’s unique number (in Numbers) Rating: 3.50
Posted on 2020-09-04 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2020-09-04 by Ady TZIDON (No Solution Yet, 8 Comments)
From factorial to power (in Just Math)
Posted on 2020-08-31 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2020-08-31 by Ady TZIDON (No Solution Yet, 2 Comments)
Location, location (in Just Math) Rating: 1.00
Posted on 2020-08-21 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2020-08-21 by Ady TZIDON (No Solution Yet, 5 Comments)
Let's party (in Numbers) Rating: 5.00
Posted on 2020-08-14 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-08-14 by Ady TZIDON (No Solution Yet, 4 Comments)
For all the tea in China (in Numbers)
Posted on 2020-07-29 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2020-07-29 by Ady TZIDON (No Solution Yet, 2 Comments)
7 matches (in Word Problems) Rating: 3.00
Posted on 2020-07-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2020-07-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Why fight? (in Numbers) Rating: 3.00
Posted on 2020-07-08 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2020-07-08 by Ady TZIDON (Solution Posted, 3 Comments)
Four generations (in Numbers) Rating: 3.00
Posted on 2020-07-06 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2020-07-06 by Ady TZIDON (No Solution Yet, 9 Comments)
Life is like a cow pasture. (in Word Problems)
Posted on 2020-07-03 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2020-07-03 by Ady TZIDON (Solution Posted, 5 Comments)
Best quotient (in Word Problems) Rating: 3.00
Posted on 2020-06-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-06-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Find Five (in Word Problems) Rating: 4.00
Posted on 2020-06-17 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2020-06-17 by Ady TZIDON (No Solution Yet, 6 Comments)
Fibo's common divider (in Sequences) Rating: 3.00
Posted on 2020-06-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-06-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Word word (in General) Rating: 4.33
Posted on 2020-06-05 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2020-06-05 by Ady TZIDON (No Solution Yet, 7 Comments)
Deja vu (in Sequences) Rating: 5.00
Posted on 2020-05-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-05-25 by Ady TZIDON (No Solution Yet, 4 Comments)
A six-digit answer (in Just Math) Rating: 4.00
Posted on 2020-05-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2020-05-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Confirm or negate (in Just Math) Rating: 5.00
Posted on 2020-04-24 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2020-04-24 by Ady TZIDON (No Solution Yet, 11 Comments)
Letters in a letter (in Word Problems) Rating: 5.00
Posted on 2020-04-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2020-04-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Select the right subset (in Word Problems)
Posted on 2020-04-10 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2020-04-10 by Ady TZIDON (No Solution Yet, 3 Comments)
Define my profile (in General) Rating: 4.00
Posted on 2020-04-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-04-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Brush up your Latin ! (in Word Problems)
Posted on 2020-03-02 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-03-02 by Ady TZIDON (No Solution Yet, 4 Comments)
PYHIYP #5 Seven up! (in Sequences) Rating: 2.00
Posted on 2020-02-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2020-02-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Got a hint? (in Sequences) Rating: 2.50
Posted on 2020-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
PYHIYP #3: 8 given, 1 missing (in Logic) Rating: 3.50
Posted on 2020-02-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2020-02-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Certain old trade (in General) Rating: 3.00
Posted on 2020-01-22 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2020-01-22 by Ady TZIDON (No Solution Yet, 5 Comments)
PYHIYP #2 (in Just Math) Rating: 5.00
Posted on 2020-01-13 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2020-01-13 by Ady TZIDON (Solution Posted, 8 Comments)
Phrase and misconception (in Cryptography) Rating: 3.00
Posted on 2020-01-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2020-01-01 by Ady TZIDON (No Solution Yet, 4 Comments)
PYHIYP #1 (in Numbers) Rating: 4.50
Posted on 2019-12-09 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2019-12-09 by Ady TZIDON (No Solution Yet, 8 Comments)
Nobody's Perfect (in Just Math) Rating: 4.00
Posted on 2019-12-04 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2019-12-04 by Ady TZIDON (No Solution Yet, 11 Comments)
78991 84! (in Word Problems) Rating: 3.00
Posted on 2019-11-19 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2019-11-19 by Ady TZIDON (Solution Posted, 3 Comments)
Thrice -----es ... (in Word Problems)
Posted on 2019-11-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-11-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Ardent tennis player (in Just Math)
Posted on 2019-10-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-10-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Non-trivial solutions (in Sequences) Rating: 5.00
Posted on 2019-10-16 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2019-10-16 by Ady TZIDON (No Solution Yet, 5 Comments)
An important virtue (in Word Problems)
Posted on 2019-10-07 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2019-10-07 by Ady TZIDON (Solution Posted, 2 Comments)
Jeopardy style IV (in Word Problems)
Posted on 2019-09-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-09-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Memphis, Tennessee (in Word Problems) Rating: 5.00
Posted on 2019-09-02 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2019-09-02 by Ady TZIDON (No Solution Yet, 4 Comments)
Money in the word (in Word Problems) Rating: 5.00
Posted on 2019-08-29 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-08-29 by Ady TZIDON (No Solution Yet, 2 Comments)
Getting 8 (in Numbers) Rating: 3.00
Posted on 2019-08-11 by Ady TZIDON (Solution Posted, 42 Comments)
Posted on 2019-08-11 by Ady TZIDON (Solution Posted, 42 Comments)
Listing the cardinal numbers’ names (in Word Problems)
Posted on 2019-07-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-07-30 by Ady TZIDON (No Solution Yet, 2 Comments)
15 A2A (in Word Problems) Rating: 4.00
Posted on 2019-07-26 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2019-07-26 by Ady TZIDON (Solution Posted, 4 Comments)
Api ece mea lpu zzl eto dec ode (in Cryptography)
Posted on 2019-07-18 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-07-18 by Ady TZIDON (No Solution Yet, 1 Comments)
One puzzle, three hints (in General)
Posted on 2019-07-13 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2019-07-13 by Ady TZIDON (Solution Posted, 4 Comments)
Trying to get better (in Just Math)
Posted on 2019-07-11 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2019-07-11 by Ady TZIDON (Solution Posted, 4 Comments)
Catching flak thrice (in Word Problems)
Posted on 2019-06-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-06-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Who's on the 4th base? (in Numbers)
Posted on 2019-05-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2019-05-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Divisors' sum = square (in Numbers) Rating: 3.00
Posted on 2019-05-27 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2019-05-27 by Ady TZIDON (Solution Posted, 9 Comments)
J.H. Lambert, I presume ? (in Just Math)
Posted on 2019-05-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-05-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Precision counts! (in Sequences) Rating: 5.00
Posted on 2019-05-12 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2019-05-12 by Ady TZIDON (Solution Posted, 4 Comments)
A Jewish dilemma (in Word Problems)
Posted on 2019-04-19 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-04-19 by Ady TZIDON (No Solution Yet, 1 Comments)
Taramasalata inspired world (in Word Problems) Rating: 4.50
Posted on 2019-04-01 by Ady TZIDON (No Solution Yet, 21 Comments)
Posted on 2019-04-01 by Ady TZIDON (No Solution Yet, 21 Comments)
6 is easy - 5 & 7 not quite ! (in Numbers) Rating: 3.00
Posted on 2019-03-31 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2019-03-31 by Ady TZIDON (No Solution Yet, 5 Comments)
Locate the inflection point (in Just Math)
Posted on 2019-03-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-03-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Odd one out (in Word Problems) Rating: 4.00
Posted on 2019-02-28 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2019-02-28 by Ady TZIDON (Solution Posted, 2 Comments)
L & R (in Word Problems) Rating: 5.00
Posted on 2019-02-26 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2019-02-26 by Ady TZIDON (Solution Posted, 1 Comments)
Add no DANDY - No need ! (in Word Problems)
Posted on 2019-02-25 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2019-02-25 by Ady TZIDON (Solution Posted, 1 Comments)
Palindromes' divisibility (in Numbers)
Posted on 2019-02-22 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2019-02-22 by Ady TZIDON (Solution Posted, 2 Comments)
Insert 2 missing numbers (in Sequences) Rating: 2.00
Posted on 2019-02-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2019-02-11 by Ady TZIDON (Solution Posted, 3 Comments)
She missed an operator (in Numbers)
Posted on 2019-02-06 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2019-02-06 by Ady TZIDON (Solution Posted, 1 Comments)
Neighbors differ by even numbers (in Numbers)
Posted on 2019-02-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-02-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Only prime digits allowed (in Numbers)
Posted on 2019-01-31 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2019-01-31 by Ady TZIDON (Solution Posted, 2 Comments)
Consistency parameter (in Just Math)
Posted on 2019-01-30 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2019-01-30 by Ady TZIDON (No Solution Yet, 3 Comments)
An enumeration problem (in Just Math)
Posted on 2019-01-28 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-01-28 by Ady TZIDON (No Solution Yet, 1 Comments)
Art Image (in General) Rating: 2.33
Posted on 2019-01-25 by Ady TZIDON (No Solution Yet, 12 Comments)
Posted on 2019-01-25 by Ady TZIDON (No Solution Yet, 12 Comments)
Uniform distribution (in Probability)
Posted on 2019-01-25 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2019-01-25 by Ady TZIDON (No Solution Yet, 9 Comments)
Half a dozen of weights (in Weights and Scales)
Posted on 2019-01-23 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-01-23 by Ady TZIDON (No Solution Yet, 1 Comments)
3^n is a sum of 3 squares (in Numbers)
Posted on 2019-01-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-01-20 by Ady TZIDON (No Solution Yet, 1 Comments)
The source of two terms (in General)
Posted on 2019-01-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2019-01-18 by Ady TZIDON (No Solution Yet, 3 Comments)
From unrelated words to family (in Word Problems) Rating: 5.00
Posted on 2019-01-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-01-17 by Ady TZIDON (No Solution Yet, 2 Comments)
From ab to ba (in Logic) Rating: 3.00
Posted on 2019-01-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2019-01-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Small difference (in Word Problems)
Posted on 2019-01-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-01-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Square alphametics (in Numbers) Rating: 3.00
Posted on 2019-01-06 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2019-01-06 by Ady TZIDON (No Solution Yet, 1 Comments)
Contradiction by erasure (in Word Problems) Rating: 4.00
Posted on 2019-01-02 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2019-01-02 by Ady TZIDON (Solution Posted, 1 Comments)
24 pre-scheduled dates (in Just Math)
Posted on 2018-12-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-12-31 by Ady TZIDON (No Solution Yet, 1 Comments)
2 sets with common members (in Numbers)
Posted on 2018-12-30 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-12-30 by Ady TZIDON (No Solution Yet, 3 Comments)
Restoring a multiplication sample (in Just Math)
Posted on 2018-12-27 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-12-27 by Ady TZIDON (No Solution Yet, 1 Comments)
Same digits (in Numbers) Rating: 4.00
Posted on 2018-12-26 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-12-26 by Ady TZIDON (Solution Posted, 6 Comments)
Choosing a game (in Just Math) Rating: 5.00
Posted on 2018-12-25 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-12-25 by Ady TZIDON (Solution Posted, 3 Comments)
Guessing the color (in Logic) Rating: 5.00
Posted on 2018-12-24 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-12-24 by Ady TZIDON (No Solution Yet, 2 Comments)
Restoring a definition (in Word Problems)
Posted on 2018-12-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-12-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Maximal number of solutions (in Just Math)
Posted on 2018-12-08 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2018-12-08 by Ady TZIDON (Solution Posted, 5 Comments)
Square after square creates a new square (in Numbers)
Posted on 2018-12-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-12-05 by Ady TZIDON (No Solution Yet, 3 Comments)
A number plus its reversal (in Numbers)
Posted on 2018-12-03 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-12-03 by Ady TZIDON (Solution Posted, 6 Comments)
Sudoku 1 (starting clues) (in Games) Rating: 1.00
Posted on 2018-11-30 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2018-11-30 by Ady TZIDON (No Solution Yet, 7 Comments)
Increasing numbers representation (in Sequences)
Posted on 2018-11-28 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-11-28 by Ady TZIDON (No Solution Yet, 2 Comments)
New word from two others (in Word Problems) Rating: 4.00
Posted on 2018-11-18 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2018-11-18 by Ady TZIDON (Solution Posted, 9 Comments)
MOI of a magic square (in Just Math)
Posted on 2018-11-16 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2018-11-16 by Ady TZIDON (No Solution Yet, 0 Comments)
The penultimate digit (in Just Math)
Posted on 2018-11-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-11-12 by Ady TZIDON (No Solution Yet, 2 Comments)
3D rooks puzzle (in Just Math) Rating: 3.00
Posted on 2018-11-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-11-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Not a common text (in Word Problems)
Posted on 2018-11-07 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2018-11-07 by Ady TZIDON (Solution Posted, 4 Comments)
Sum of the page numbers (in Just Math)
Posted on 2018-11-05 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-11-05 by Ady TZIDON (Solution Posted, 3 Comments)
A couple of numbers (in Numbers) Rating: 4.00
Posted on 2018-11-04 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2018-11-04 by Ady TZIDON (Solution Posted, 4 Comments)
The wisdom of Windsor (in Word Problems)
Posted on 2018-10-26 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-10-26 by Ady TZIDON (No Solution Yet, 2 Comments)
One trial only! (in Weights and Scales)
Posted on 2018-10-22 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-10-22 by Ady TZIDON (No Solution Yet, 1 Comments)
Squares needing 2 digits only (in Numbers)
Posted on 2018-10-21 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-10-21 by Ady TZIDON (Solution Posted, 3 Comments)
Equation with factorial (in Just Math)
Posted on 2018-10-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-10-20 by Ady TZIDON (No Solution Yet, 1 Comments)
A series of primes equals N (in Numbers)
Posted on 2018-10-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-10-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Box of balls (in Probability) Rating: 4.00
Posted on 2018-10-16 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-10-16 by Ady TZIDON (Solution Posted, 6 Comments)
A partial cryptoquote (in Word Problems)
Posted on 2018-10-15 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-10-15 by Ady TZIDON (No Solution Yet, 1 Comments)
Introducing sphenic numbers (in Numbers)
Posted on 2018-10-14 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-10-14 by Ady TZIDON (No Solution Yet, 3 Comments)
Within a triangle (in Geometry) Rating: 3.00
Posted on 2018-10-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-10-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Reversal creates average (in Sequences)
Posted on 2018-10-10 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2018-10-10 by Ady TZIDON (No Solution Yet, 7 Comments)
Feathers of different colors (in Numbers)
Posted on 2018-10-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-10-06 by Ady TZIDON (No Solution Yet, 2 Comments)
A logical search (in Numbers) Rating: 1.50
Posted on 2018-09-24 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2018-09-24 by Ady TZIDON (Solution Posted, 10 Comments)
A square divides concatenation (in Numbers)
Posted on 2018-09-22 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-09-22 by Ady TZIDON (Solution Posted, 1 Comments)
Antigrams wanted (in Word Problems) Rating: 5.00
Posted on 2018-09-21 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2018-09-21 by Ady TZIDON (No Solution Yet, 6 Comments)
One rope, two flagpoles... (in Logic) Rating: 5.00
Posted on 2018-09-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-09-18 by Ady TZIDON (No Solution Yet, 4 Comments)
A formal proof requested (in Just Math) Rating: 3.00
Posted on 2018-09-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-09-13 by Ady TZIDON (No Solution Yet, 2 Comments)
It is either O or E (in General) Rating: 2.00
Posted on 2018-09-12 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2018-09-12 by Ady TZIDON (No Solution Yet, 5 Comments)
How to do it? (in Geometry) Rating: 5.00
Posted on 2018-09-05 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2018-09-05 by Ady TZIDON (No Solution Yet, 11 Comments)
Around the beast number (in Numbers)
Posted on 2018-09-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-09-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Ones vs twos (in Numbers) Rating: 3.00
Posted on 2018-09-03 by Ady TZIDON (No Solution Yet, 47 Comments)
Posted on 2018-09-03 by Ady TZIDON (No Solution Yet, 47 Comments)
Sufficient or not? (in Numbers) Rating: 5.00
Posted on 2018-08-29 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2018-08-29 by Ady TZIDON (No Solution Yet, 6 Comments)
Tiling 3x110 grid (in Just Math) Rating: 4.33
Posted on 2018-08-21 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2018-08-21 by Ady TZIDON (No Solution Yet, 9 Comments)
In Memoriam (in Numbers) Rating: 5.00
Posted on 2018-08-16 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2018-08-16 by Ady TZIDON (No Solution Yet, 10 Comments)
31 created by 4 successive integers (in Numbers) Rating: 3.00
Posted on 2018-08-13 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2018-08-13 by Ady TZIDON (No Solution Yet, 7 Comments)
Jeopardy-style A&Q (in Numbers) Rating: 5.00
Posted on 2018-08-12 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-08-12 by Ady TZIDON (Solution Posted, 6 Comments)
Quintuplet of consecutive primes (in Numbers)
Posted on 2018-08-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-08-11 by Ady TZIDON (Solution Posted, 3 Comments)
Art is marching on.. (in Word Problems) Rating: 3.00
Posted on 2018-08-08 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-08-08 by Ady TZIDON (Solution Posted, 6 Comments)
Shirtless ? Even nude! (in Numbers)
Posted on 2018-08-07 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-08-07 by Ady TZIDON (No Solution Yet, 3 Comments)
1st 101-digit prime (in Numbers) Rating: 3.00
Posted on 2018-08-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-08-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Ten to five (in Numbers) Rating: 3.00
Posted on 2018-07-30 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2018-07-30 by Ady TZIDON (No Solution Yet, 7 Comments)
99 as an example (in Numbers) Rating: 5.00
Posted on 2018-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
From eleven to ... ETERNITY (in Numbers)
Posted on 2018-07-14 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-07-14 by Ady TZIDON (Solution Posted, 3 Comments)
Probability of being coprime (in Probability)
Posted on 2018-07-11 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-07-11 by Ady TZIDON (No Solution Yet, 4 Comments)
5 ways of factorizing (in Numbers) Rating: 3.00
Posted on 2018-07-07 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-07-07 by Ady TZIDON (Solution Posted, 3 Comments)
Who's on the second base? (in Numbers)
Posted on 2018-07-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-07-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Counting magic squares (in Just Math) Rating: 2.00
Posted on 2018-06-30 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2018-06-30 by Ady TZIDON (Solution Posted, 2 Comments)
7 come zero (in Probability) Rating: 5.00
Posted on 2018-06-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2018-06-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Summing consecutive factorials (in Just Math)
Posted on 2018-06-26 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2018-06-26 by Ady TZIDON (No Solution Yet, 7 Comments)
Cubes as factorials' sum (in Numbers)
Posted on 2018-06-23 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-06-23 by Ady TZIDON (Solution Posted, 1 Comments)
Zero is the last digit of S (in Numbers) Rating: 5.00
Posted on 2018-06-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-06-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Looking for a square result (in Just Math)
Posted on 2018-06-14 by Ady TZIDON (No Solution Yet, 18 Comments)
Posted on 2018-06-14 by Ady TZIDON (No Solution Yet, 18 Comments)
Evaluate probability (in Probability)
Posted on 2018-06-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-06-11 by Ady TZIDON (No Solution Yet, 1 Comments)
How fast can you solve it? (in Just Math)
Posted on 2018-06-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-06-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Define number n in n letters (in General)
Posted on 2018-06-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-06-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Optimal result (in Just Math) Rating: 2.00
Posted on 2018-06-04 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2018-06-04 by Ady TZIDON (No Solution Yet, 11 Comments)
Equidistant point (in Geometry) Rating: 3.00
Posted on 2018-06-03 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-06-03 by Ady TZIDON (No Solution Yet, 4 Comments)
Ls, Os & Ses left ... (in Word Problems) Rating: 3.00
Posted on 2018-06-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-06-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Pascal revisited (in Numbers) Rating: 3.00
Posted on 2018-05-28 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-05-28 by Ady TZIDON (No Solution Yet, 1 Comments)
What is the value of D? (in Just Math)
Posted on 2018-05-27 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-05-27 by Ady TZIDON (No Solution Yet, 1 Comments)
How many drinks do you need? (in Numbers)
Posted on 2018-05-25 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-05-25 by Ady TZIDON (Solution Posted, 1 Comments)
Self-numbers and generators (in Numbers)
Posted on 2018-05-23 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2018-05-23 by Ady TZIDON (No Solution Yet, 8 Comments)
SI O NO ? (in General) Rating: 3.00
Posted on 2018-05-19 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-05-19 by Ady TZIDON (Solution Posted, 3 Comments)
Will take some time ?? (in Numbers)
Posted on 2018-05-18 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2018-05-18 by Ady TZIDON (Solution Posted, 5 Comments)
From primes to palindromes (in Numbers)
Posted on 2018-05-16 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-05-16 by Ady TZIDON (No Solution Yet, 4 Comments)
Explain Plato's affinity (in Numbers) Rating: 5.00
Posted on 2018-05-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-05-15 by Ady TZIDON (No Solution Yet, 3 Comments)
190 couples (in Numbers) Rating: 3.00
Posted on 2018-05-03 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2018-05-03 by Ady TZIDON (Solution Posted, 2 Comments)
Two random points (in Probability)
Posted on 2018-04-26 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2018-04-26 by Ady TZIDON (No Solution Yet, 10 Comments)
A pandigital set (in Numbers) Rating: 5.00
Posted on 2018-04-14 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2018-04-14 by Ady TZIDON (No Solution Yet, 5 Comments)
Squares built from leftovers (in Numbers)
Posted on 2018-04-05 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2018-04-05 by Ady TZIDON (Solution Posted, 4 Comments)
Better late than never ...HNY (in Just Math)
Posted on 2018-04-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-04-01 by Ady TZIDON (No Solution Yet, 3 Comments)
One square implies many (in Sequences)
Posted on 2018-03-28 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2018-03-28 by Ady TZIDON (No Solution Yet, 6 Comments)
Generating triplets of squares (in Just Math)
Posted on 2018-03-25 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2018-03-25 by Ady TZIDON (No Solution Yet, 5 Comments)
All in the USA (in Numbers) Rating: 5.00
Posted on 2018-03-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-03-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Three squares imply the fourth (in Just Math)
Posted on 2018-03-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-03-18 by Ady TZIDON (No Solution Yet, 2 Comments)
3x3 magic square of squares (in Numbers)
Posted on 2018-03-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-03-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Seven given - the eighth TBD (in Sequences)
Posted on 2018-03-14 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-03-14 by Ady TZIDON (Solution Posted, 6 Comments)
A scrambled acronym (in Word Problems)
Posted on 2018-03-13 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2018-03-13 by Ady TZIDON (Solution Posted, 2 Comments)
Q: ?hat letter is missing? (in Numbers)
Posted on 2018-03-11 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-03-11 by Ady TZIDON (Solution Posted, 1 Comments)
An atom of atom (in Numbers) Rating: 4.00
Posted on 2018-03-10 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-03-10 by Ady TZIDON (Solution Posted, 1 Comments)
Another Dudeney problem (in Numbers)
Posted on 2018-03-09 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2018-03-09 by Ady TZIDON (Solution Posted, 2 Comments)
A palindromic equation (in Numbers)
Posted on 2018-03-04 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2018-03-04 by Ady TZIDON (Solution Posted, 5 Comments)
Hill's data (in Numbers) Rating: 5.00
Posted on 2018-03-03 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-03-03 by Ady TZIDON (Solution Posted, 6 Comments)
4 digit number derived from a single digit (in Numbers)
Posted on 2018-02-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-02-26 by Ady TZIDON (No Solution Yet, 3 Comments)
A sixth power in many ways (in Numbers)
Posted on 2018-02-22 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-02-22 by Ady TZIDON (No Solution Yet, 1 Comments)
A quote and its source (in Word Problems)
Posted on 2018-02-21 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-02-21 by Ady TZIDON (Solution Posted, 1 Comments)
Strictly non-palindromic numbers (in Numbers)
Posted on 2018-02-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-02-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Let's make a deal (in Numbers) Rating: 5.00
Posted on 2018-02-17 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-02-17 by Ady TZIDON (Solution Posted, 1 Comments)
Choosing the right number (in Numbers)
Posted on 2018-02-13 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2018-02-13 by Ady TZIDON (Solution Posted, 6 Comments)
Using nine positive digits (in Numbers)
Posted on 2018-02-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-02-11 by Ady TZIDON (Solution Posted, 3 Comments)
Only six distinct digits (in Numbers)
Posted on 2018-02-10 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-02-10 by Ady TZIDON (Solution Posted, 1 Comments)
En francais seulement ! (in Numbers)
Posted on 2018-02-09 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-02-09 by Ady TZIDON (Solution Posted, 3 Comments)
Square pairs (in Just Math) Rating: 5.00
Posted on 2018-02-07 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-02-07 by Ady TZIDON (Solution Posted, 3 Comments)
113 together (in Just Math) Rating: 1.00
Posted on 2018-01-30 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2018-01-30 by Ady TZIDON (Solution Posted, 4 Comments)
Evaluate the missing digit (in Just Math)
Posted on 2018-01-29 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-01-29 by Ady TZIDON (No Solution Yet, 1 Comments)
How many numbers in the end? (in Numbers)
Posted on 2018-01-28 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-01-28 by Ady TZIDON (No Solution Yet, 2 Comments)
Quite a pair! (in Numbers) Rating: 5.00
Posted on 2018-01-26 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-01-26 by Ady TZIDON (No Solution Yet, 2 Comments)
Try a shortcut (in Just Math) Rating: 3.00
Posted on 2018-01-21 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2018-01-21 by Ady TZIDON (Solution Posted, 1 Comments)
Quite a coincidence (in Just Math) Rating: 3.00
Posted on 2018-01-19 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2018-01-19 by Ady TZIDON (No Solution Yet, 6 Comments)
A set of subsets (in Just Math) Rating: 5.00
Posted on 2018-01-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2018-01-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Evaluating a distance (in Geometry)
Posted on 2018-01-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2018-01-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Funny way to divide by seven (in Numbers)
Posted on 2018-01-12 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2018-01-12 by Ady TZIDON (Solution Posted, 3 Comments)
A special phenomenon (in Logic) Rating: 5.00
Posted on 2018-01-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-01-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Three questions plus one challenge (in Numbers)
Posted on 2018-01-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2018-01-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Simple fractions (in Just Math) Rating: 3.00
Posted on 2018-01-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2018-01-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Pandigital and divisible (in Numbers)
Posted on 2017-12-29 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-12-29 by Ady TZIDON (No Solution Yet, 3 Comments)
Expanding the railroad line (in Just Math)
Posted on 2017-12-26 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-12-26 by Ady TZIDON (No Solution Yet, 2 Comments)
The Young Girl's Age (in Just Math)
Posted on 2017-12-25 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-12-25 by Ady TZIDON (No Solution Yet, 2 Comments)
One problem - many ways to solve... (in Numbers)
Posted on 2017-12-21 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2017-12-21 by Ady TZIDON (No Solution Yet, 6 Comments)
A true story (in Numbers) Rating: 5.00
Posted on 2017-12-20 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2017-12-20 by Ady TZIDON (No Solution Yet, 6 Comments)
Given one, get the other three (in Numbers) Rating: 3.00
Posted on 2017-12-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-12-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Squares in a rectangle (in Numbers)
Posted on 2017-12-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-12-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Fibo's zeroes repeated (in Numbers)
Posted on 2017-12-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-12-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Spelling bee results (in Just Math) Rating: 2.00
Posted on 2017-12-08 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-12-08 by Ady TZIDON (No Solution Yet, 1 Comments)
A creative contest (in Word Problems)
Posted on 2017-12-07 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2017-12-07 by Ady TZIDON (No Solution Yet, 0 Comments)
No miracles (in Famous Riddles) Rating: 4.00
Posted on 2017-12-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-12-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Just 4 different digits (in Numbers)
Posted on 2017-12-03 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2017-12-03 by Ady TZIDON (No Solution Yet, 10 Comments)
One ninth of a pandigital (in Numbers)
Posted on 2017-12-02 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-12-02 by Ady TZIDON (No Solution Yet, 1 Comments)
One triplet of digits (in Numbers) Rating: 3.50
Posted on 2017-12-01 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2017-12-01 by Ady TZIDON (No Solution Yet, 7 Comments)
Unique decimal primes (in Algorithms)
Posted on 2017-11-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-11-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Way to go (in Riddles) Rating: 4.00
Posted on 2017-11-22 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2017-11-22 by Ady TZIDON (No Solution Yet, 5 Comments)
A triple T question (in Famous Riddles) Rating: 2.00
Posted on 2017-11-20 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2017-11-20 by Ady TZIDON (Solution Posted, 5 Comments)
Your creativity challenged (in Riddles)
Posted on 2017-11-15 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2017-11-15 by Ady TZIDON (No Solution Yet, 7 Comments)
Making a 10 (in Numbers) Rating: 4.00
Posted on 2017-11-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-11-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Beast number as a substring (in Numbers)
Posted on 2017-11-11 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-11-11 by Ady TZIDON (No Solution Yet, 2 Comments)
From words to equations (in General)
Posted on 2017-11-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-11-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Reverse Engineering I (in Cryptography) Rating: 3.00
Posted on 2017-11-09 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2017-11-09 by Ady TZIDON (No Solution Yet, 5 Comments)
One digit answer (in Numbers) Rating: 3.00
Posted on 2017-11-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-11-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Attributed to Lewis Carroll (in Probability) Rating: 3.00
Posted on 2017-11-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-11-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Rectangle in a circle (in Just Math)
Posted on 2017-11-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-11-07 by Ady TZIDON (No Solution Yet, 4 Comments)
No big digits involved (in Numbers)
Posted on 2017-11-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-11-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Searching for the minimal repunit (in Numbers)
Posted on 2017-11-06 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-11-06 by Ady TZIDON (No Solution Yet, 1 Comments)
Recovering the unknown triplet (in Numbers)
Posted on 2017-11-03 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2017-11-03 by Ady TZIDON (No Solution Yet, 0 Comments)
X & Y erased (in Numbers) Rating: 3.00
Posted on 2017-11-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-11-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Truth or consequences (in Just Math)
Posted on 2017-11-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-11-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Only one number qualifies! (in Numbers)
Posted on 2017-11-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-11-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Mutual dependence (in Numbers) Rating: 3.00
Posted on 2017-11-01 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-11-01 by Ady TZIDON (Solution Posted, 3 Comments)
2 ways to prove it (in Just Math) Rating: 4.00
Posted on 2017-10-31 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-10-31 by Ady TZIDON (No Solution Yet, 4 Comments)
Create 2 congruent triangles (in Geometry) Rating: 3.00
Posted on 2017-10-31 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-10-31 by Ady TZIDON (No Solution Yet, 4 Comments)
Two SPECIAL PARTITIONS (in Numbers)
Posted on 2017-10-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-10-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Leaving the least (the most) (in Numbers)
Posted on 2017-10-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-10-27 by Ady TZIDON (No Solution Yet, 2 Comments)
One word - created by two others (in Word Problems)
Posted on 2017-10-25 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-10-25 by Ady TZIDON (Solution Posted, 3 Comments)
Urban architecture (in Word Problems)
Posted on 2017-10-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-10-23 by Ady TZIDON (No Solution Yet, 3 Comments)
3 lowest score words (in Word Problems) Rating: 5.00
Posted on 2017-10-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-10-20 by Ady TZIDON (No Solution Yet, 3 Comments)
The Odds Must Be Crazy (in Probability)
Posted on 2017-10-19 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-10-19 by Ady TZIDON (No Solution Yet, 4 Comments)
The olog is t anagrammed (in Word Problems)
Posted on 2017-10-19 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2017-10-19 by Ady TZIDON (Solution Posted, 2 Comments)
Dimsums LTD (in Numbers) Rating: 3.00
Posted on 2017-10-16 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-10-16 by Ady TZIDON (Solution Posted, 3 Comments)
Somewhere in the USA (in Word Problems) Rating: 5.00
Posted on 2017-10-10 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2017-10-10 by Ady TZIDON (No Solution Yet, 6 Comments)
Toasting the eternal (in Just Math)
Posted on 2017-09-27 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-09-27 by Ady TZIDON (No Solution Yet, 3 Comments)
Solve the alpha2etic ! (in Just Math)
Posted on 2017-09-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-09-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Proving an inequality (in Geometry) Rating: 4.00
Posted on 2017-09-17 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-09-17 by Ady TZIDON (No Solution Yet, 1 Comments)
Cryptaquote I (in Word Problems) Rating: 5.00
Posted on 2017-09-14 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2017-09-14 by Ady TZIDON (Solution Posted, 6 Comments)
Lots of lods (in Sequences) Rating: 4.67
Posted on 2017-09-10 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2017-09-10 by Ady TZIDON (No Solution Yet, 7 Comments)
Product of 100 factorials (in Just Math) Rating: 3.50
Posted on 2017-09-07 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2017-09-07 by Ady TZIDON (No Solution Yet, 8 Comments)
Getting closer to your pie (in Numbers)
Posted on 2017-09-04 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2017-09-04 by Ady TZIDON (No Solution Yet, 10 Comments)
Solve a generic set of equations (in Just Math) Rating: 3.00
Posted on 2017-09-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-09-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Leaving a maximal result (in Algorithms)
Posted on 2017-08-25 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-08-25 by Ady TZIDON (No Solution Yet, 3 Comments)
A repunit product (in Word Problems)
Posted on 2017-08-19 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2017-08-19 by Ady TZIDON (No Solution Yet, 5 Comments)
At the bridge club (in Logic) Rating: 5.00
Posted on 2017-08-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-08-15 by Ady TZIDON (No Solution Yet, 2 Comments)
The well-defined digit (in Numbers) Rating: 5.00
Posted on 2017-08-14 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2017-08-14 by Ady TZIDON (Solution Posted, 5 Comments)
Straight or rotated (in Numbers) Rating: 5.00
Posted on 2017-08-10 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-08-10 by Ady TZIDON (No Solution Yet, 3 Comments)
Even (related) chances (in Probability)
Posted on 2017-08-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-08-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Published in the thirties (in Famous Riddles) Rating: 4.00
Posted on 2017-08-03 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2017-08-03 by Ady TZIDON (No Solution Yet, 5 Comments)
Two parallelograms (in Geometry) Rating: 3.00
Posted on 2017-08-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-08-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Almost-pandigital sets (in Numbers)
Posted on 2017-07-22 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-07-22 by Ady TZIDON (Solution Posted, 1 Comments)
Brazilian numbers (in Sequences) Rating: 3.00
Posted on 2017-07-15 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2017-07-15 by Ady TZIDON (Solution Posted, 4 Comments)
Fermat numbers (in Numbers) Rating: 4.00
Posted on 2017-07-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-07-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Make the proof full-proof (in Word Problems)
Posted on 2017-07-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-07-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Just add 2 letters (in Word Problems)
Posted on 2017-07-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-07-06 by Ady TZIDON (No Solution Yet, 3 Comments)
4 couples make a new word (in Word Problems) Rating: 5.00
Posted on 2017-07-04 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-07-04 by Ady TZIDON (Solution Posted, 3 Comments)
2 kids 3 boxes (in Games) Rating: 4.00
Posted on 2017-07-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-07-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Words and hints (in General) Rating: 5.00
Posted on 2017-06-27 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2017-06-27 by Ady TZIDON (Solution Posted, 2 Comments)
Lewis Carroll's finding (in Geometry)
Posted on 2017-06-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-06-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Letters to digits to letters (in Numbers)
Posted on 2017-06-22 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-06-22 by Ady TZIDON (Solution Posted, 1 Comments)
Punchline I (in Word Problems) Rating: 3.00
Posted on 2017-06-19 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-06-19 by Ady TZIDON (No Solution Yet, 3 Comments)
Rational number's conversion (in Just Math) Rating: 5.00
Posted on 2017-06-18 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2017-06-18 by Ady TZIDON (No Solution Yet, 5 Comments)
a cube = s.o.d . (in Numbers) Rating: 3.00
Posted on 2017-06-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-06-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Paradox? Not really (in Probability)
Posted on 2017-06-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-06-13 by Ady TZIDON (No Solution Yet, 1 Comments)
A madness sequence (50 digits) (in Sequences) Rating: 2.00
Posted on 2017-06-11 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-06-11 by Ady TZIDON (No Solution Yet, 2 Comments)
A powerful anagram (in Word Problems)
Posted on 2017-06-09 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-06-09 by Ady TZIDON (Solution Posted, 3 Comments)
Double black (in Probability) Rating: 2.67
Posted on 2017-06-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-06-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Question and answer (in General) Rating: 4.67
Posted on 2017-06-07 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-06-07 by Ady TZIDON (Solution Posted, 3 Comments)
18 is not enough (in Sequences) Rating: 3.00
Posted on 2017-06-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-06-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Ulam numbers (in Numbers) Rating: 3.00
Posted on 2017-06-03 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2017-06-03 by Ady TZIDON (Solution Posted, 5 Comments)
From right to left (in Weights and Scales) Rating: 4.00
Posted on 2017-06-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-06-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Unbalanced?- No problem (in Weights and Scales) Rating: 4.00
Posted on 2017-05-30 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2017-05-30 by Ady TZIDON (No Solution Yet, 7 Comments)
Empty the bucket (in Logic) Rating: 4.50
Posted on 2017-05-29 by Ady TZIDON (Solution Posted, 12 Comments)
Posted on 2017-05-29 by Ady TZIDON (Solution Posted, 12 Comments)
Oleg or Erdös? (in Games) Rating: 4.00
Posted on 2017-05-26 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2017-05-26 by Ady TZIDON (No Solution Yet, 8 Comments)
First or second? (in Games) Rating: 3.00
Posted on 2017-05-23 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2017-05-23 by Ady TZIDON (Solution Posted, 6 Comments)
5 dice (in Probability) Rating: 3.00
Posted on 2017-05-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-05-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Four balls (in Probability) Rating: 3.50
Posted on 2017-05-19 by Ady TZIDON (Solution Posted, 22 Comments)
Posted on 2017-05-19 by Ady TZIDON (Solution Posted, 22 Comments)
Hands off! (in Weights and Scales) Rating: 3.00
Posted on 2017-05-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-05-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Not every prime qualifies! (in Numbers)
Posted on 2017-05-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-05-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Dirichlet sends his regards (in Logic) Rating: 3.00
Posted on 2017-05-12 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2017-05-12 by Ady TZIDON (No Solution Yet, 5 Comments)
Inder Taneja's discovery (in Numbers)
Posted on 2017-05-11 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-05-11 by Ady TZIDON (No Solution Yet, 4 Comments)
The length of the belt (in Geometry) Rating: 3.00
Posted on 2017-05-09 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2017-05-09 by Ady TZIDON (No Solution Yet, 6 Comments)
Heavily wounded (in Probability) Rating: 3.00
Posted on 2017-05-08 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-05-08 by Ady TZIDON (Solution Posted, 1 Comments)
The smallest non-conformist (in Numbers)
Posted on 2017-05-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-05-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Smallest pandifibo number (in Numbers)
Posted on 2017-04-29 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-04-29 by Ady TZIDON (No Solution Yet, 1 Comments)
Eat as eat can (in Numbers) Rating: 3.00
Posted on 2017-04-28 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-04-28 by Ady TZIDON (No Solution Yet, 2 Comments)
Baker to butcher to baker (in Just Math)
Posted on 2017-04-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-04-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Prime with no prime digits (in Numbers)
Posted on 2017-04-25 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2017-04-25 by Ady TZIDON (Solution Posted, 5 Comments)
Liars can figure (in Liars and Knights) Rating: 2.00
Posted on 2017-04-24 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2017-04-24 by Ady TZIDON (Solution Posted, 4 Comments)
e as a pandigital expression (in Numbers)
Posted on 2017-04-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-04-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Maxim, Minerva & Kangaroo (in Numbers)
Posted on 2017-04-22 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-04-22 by Ady TZIDON (No Solution Yet, 4 Comments)
Cryptajoke XVII (in Numbers) Rating: 3.00
Posted on 2017-04-21 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2017-04-21 by Ady TZIDON (Solution Posted, 6 Comments)
A factorial in seconds (in Numbers) Rating: 5.00
Posted on 2017-04-18 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2017-04-18 by Ady TZIDON (Solution Posted, 7 Comments)
Pacifist or else? (in Word Problems) Rating: 4.00
Posted on 2017-04-16 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-04-16 by Ady TZIDON (Solution Posted, 3 Comments)
Growth Potential (in Algorithms) Rating: 4.00
Posted on 2017-04-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-04-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Pretty primes (in Numbers) Rating: 2.00
Posted on 2017-04-10 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2017-04-10 by Ady TZIDON (Solution Posted, 2 Comments)
Names in Boxes (in Logic) Rating: 4.00
Posted on 2017-04-09 by Ady TZIDON (No Solution Yet, 15 Comments)
Posted on 2017-04-09 by Ady TZIDON (No Solution Yet, 15 Comments)
The magnificent twelve (in Numbers)
Posted on 2017-04-07 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-04-07 by Ady TZIDON (Solution Posted, 3 Comments)
What is the value of "?" ? (in General)
Posted on 2017-04-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-04-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Long live the vowels (in Word Problems)
Posted on 2017-04-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-04-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Y ask about Y ? (in Numbers) Rating: 3.00
Posted on 2017-04-04 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2017-04-04 by Ady TZIDON (Solution Posted, 7 Comments)
S.o.S is S (in Numbers) Rating: 2.00
Posted on 2017-04-03 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2017-04-03 by Ady TZIDON (No Solution Yet, 6 Comments)
Three mirrored multiplications (in Numbers)
Posted on 2017-04-02 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-04-02 by Ady TZIDON (No Solution Yet, 1 Comments)
Inspirational aspiration (in Word Problems)
Posted on 2017-03-31 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-03-31 by Ady TZIDON (Solution Posted, 1 Comments)
Power partition procedure (in Numbers)
Posted on 2017-03-26 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2017-03-26 by Ady TZIDON (Solution Posted, 5 Comments)
Up and up (in Numbers) Rating: 5.00
Posted on 2017-03-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-03-22 by Ady TZIDON (No Solution Yet, 2 Comments)
The sum of 2016 terms (in Sequences)
Posted on 2017-03-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-03-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Elongated Pentagonal Orthocupola's vertices (in Shapes)
Posted on 2017-03-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-03-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Leave no stone unturned (in Logic) Rating: 4.00
Posted on 2017-03-19 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2017-03-19 by Ady TZIDON (Solution Posted, 5 Comments)
It's obvious, but needs proof (in Just Math)
Posted on 2017-03-15 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2017-03-15 by Ady TZIDON (Solution Posted, 2 Comments)
Equality? Yes, but not exactly... (in Numbers)
Posted on 2017-03-14 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-03-14 by Ady TZIDON (Solution Posted, 1 Comments)
Integers and their sums of digits (in Just Math)
Posted on 2017-03-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-03-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Three heights in a triangle (in Geometry)
Posted on 2017-03-11 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-03-11 by Ady TZIDON (No Solution Yet, 2 Comments)
1 progression, 2 sums, 3 numbers (in Just Math)
Posted on 2017-03-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-03-09 by Ady TZIDON (No Solution Yet, 1 Comments)
An easy whodunit (in Logic) Rating: 3.33
Posted on 2017-03-08 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2017-03-08 by Ady TZIDON (Solution Posted, 9 Comments)
Inequality with a constraint (in Just Math)
Posted on 2017-03-04 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2017-03-04 by Ady TZIDON (No Solution Yet, 0 Comments)
Only real x counted (in Probability)
Posted on 2017-03-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-03-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Scanning Bard's masterpiece (in Word Problems)
Posted on 2017-02-25 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2017-02-25 by Ady TZIDON (No Solution Yet, 0 Comments)
Italian, English, and both (in General) Rating: 4.00
Posted on 2017-02-22 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2017-02-22 by Ady TZIDON (No Solution Yet, 7 Comments)
The toll of two cities (in Geometry)
Posted on 2017-02-20 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-02-20 by Ady TZIDON (Solution Posted, 1 Comments)
Placing 4 integers within a set interval (in Just Math)
Posted on 2017-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Odds are ... (in Probability) Rating: 3.50
Posted on 2017-02-14 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2017-02-14 by Ady TZIDON (No Solution Yet, 11 Comments)
Trying to reach a Pythagorean triplet (in Just Math)
Posted on 2017-02-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-02-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Most words from your word (in Word Problems)
Posted on 2017-02-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2017-02-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Lies, truth, and logic (in Liars and Knights) Rating: 1.00
Posted on 2017-02-09 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-02-09 by Ady TZIDON (No Solution Yet, 2 Comments)
4 is five and 5 is four (in Word Problems)
Posted on 2017-02-04 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2017-02-04 by Ady TZIDON (Solution Posted, 3 Comments)
T better than S (in Famous Riddles) Rating: 2.00
Posted on 2017-02-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-02-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Given VI, evaluate VII (in Sequences)
Posted on 2017-02-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-02-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Opening your eyes (in Famous Riddles) Rating: 2.00
Posted on 2017-01-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2017-01-28 by Ady TZIDON (No Solution Yet, 3 Comments)
1,3,8 ...extend! (in Numbers) Rating: 5.00
Posted on 2017-01-26 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-01-26 by Ady TZIDON (No Solution Yet, 4 Comments)
Non-zero solutions only (in Just Math)
Posted on 2017-01-23 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2017-01-23 by Ady TZIDON (No Solution Yet, 0 Comments)
Powers of x and y (in Just Math) Rating: 4.00
Posted on 2017-01-21 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2017-01-21 by Ady TZIDON (No Solution Yet, 4 Comments)
Six (or more) sextuples (in Numbers)
Posted on 2017-01-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2017-01-20 by Ady TZIDON (No Solution Yet, 1 Comments)
When is it a square? (in Just Math)
Posted on 2017-01-15 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2017-01-15 by Ady TZIDON (Solution Posted, 1 Comments)
Squares sum up to a prime (in Just Math)
Posted on 2017-01-13 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2017-01-13 by Ady TZIDON (Solution Posted, 6 Comments)
Proving divisibility (in Just Math)
Posted on 2017-01-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2017-01-08 by Ady TZIDON (No Solution Yet, 2 Comments)
A set of 3 equations (in Just Math) Rating: 3.50
Posted on 2016-12-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-12-31 by Ady TZIDON (No Solution Yet, 1 Comments)
As EZ as UC it (in Numbers) Rating: 4.00
Posted on 2016-12-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-12-26 by Ady TZIDON (No Solution Yet, 3 Comments)
No change in its value (in Numbers)
Posted on 2016-12-23 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-12-23 by Ady TZIDON (No Solution Yet, 1 Comments)
A chain of powers (in Sequences) Rating: 4.00
Posted on 2016-12-22 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-12-22 by Ady TZIDON (No Solution Yet, 1 Comments)
It's all in the stars (in Just Math)
Posted on 2016-12-14 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-12-14 by Ady TZIDON (No Solution Yet, 2 Comments)
A ragman from 3 to 10 (in Word Problems)
Posted on 2016-12-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-12-07 by Ady TZIDON (No Solution Yet, 2 Comments)
A biased random walk (in Probability)
Posted on 2016-12-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-12-01 by Ady TZIDON (No Solution Yet, 1 Comments)
7+8=12 ?? (in Just Math) Rating: 3.00
Posted on 2016-11-30 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-11-30 by Ady TZIDON (No Solution Yet, 3 Comments)
26 out of 50 (in Just Math) Rating: 4.00
Posted on 2016-11-25 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2016-11-25 by Ady TZIDON (No Solution Yet, 10 Comments)
Prime repunits (in Numbers) Rating: 3.50
Posted on 2016-11-24 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2016-11-24 by Ady TZIDON (No Solution Yet, 6 Comments)
Your conclusion requested (in Logic) Rating: 3.67
Posted on 2016-11-03 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2016-11-03 by Ady TZIDON (No Solution Yet, 9 Comments)
Rationality certification (in Just Math)
Posted on 2016-10-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-10-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Inequality challenge (in Just Math)
Posted on 2016-10-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-10-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Prove Phi's Peculiar Property (in Numbers)
Posted on 2016-10-17 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-10-17 by Ady TZIDON (No Solution Yet, 3 Comments)
Phibobrick's dimensions (in Numbers)
Posted on 2016-10-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-10-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Adding consecutive primes (in Just Math)
Posted on 2016-10-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-10-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Additional solutions, please (in Just Math)
Posted on 2016-10-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-10-03 by Ady TZIDON (No Solution Yet, 3 Comments)
No data - just a weighing problem (in General) Rating: 5.00
Posted on 2016-09-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-09-27 by Ady TZIDON (No Solution Yet, 2 Comments)
Provide the next number (in Sequences)
Posted on 2016-09-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-09-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Think twice (in Just Math) Rating: 5.00
Posted on 2016-09-12 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2016-09-12 by Ady TZIDON (Solution Posted, 4 Comments)
Finding the hidden digit (in Tricks)
Posted on 2016-09-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-09-09 by Ady TZIDON (No Solution Yet, 1 Comments)
1248 must be included (in Sequences)
Posted on 2016-09-06 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2016-09-06 by Ady TZIDON (Solution Posted, 3 Comments)
Bonne chance (in Logic) Rating: 4.00
Posted on 2016-09-02 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2016-09-02 by Ady TZIDON (Solution Posted, 2 Comments)
Add missing letters (in Word Problems) Rating: 3.00
Posted on 2016-08-30 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-08-30 by Ady TZIDON (No Solution Yet, 3 Comments)
All rational numbers in (in Sequences)
Posted on 2016-08-26 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2016-08-26 by Ady TZIDON (No Solution Yet, 10 Comments)
Business is business (in Word Problems) Rating: 4.00
Posted on 2016-08-24 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2016-08-24 by Ady TZIDON (No Solution Yet, 7 Comments)
Almost disjoint union (in Just Math)
Posted on 2016-08-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-08-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Guessing your birthdate (in Just Math)
Posted on 2016-08-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-08-18 by Ady TZIDON (No Solution Yet, 4 Comments)
4 groups of 4 (in Word Problems) Rating: 2.00
Posted on 2016-08-16 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2016-08-16 by Ady TZIDON (No Solution Yet, 8 Comments)
Translate a ledger entry (in Word Problems) Rating: 4.00
Posted on 2016-08-12 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2016-08-12 by Ady TZIDON (Solution Posted, 4 Comments)
Find additional pairs (in Just Math)
Posted on 2016-08-08 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2016-08-08 by Ady TZIDON (Solution Posted, 5 Comments)
A spiral word (in Word Problems) Rating: 3.50
Posted on 2016-08-04 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2016-08-04 by Ady TZIDON (No Solution Yet, 7 Comments)
A square within a triangle (in Just Math)
Posted on 2016-07-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-07-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Two items to get sqrt of 2 (in Science) Rating: 3.00
Posted on 2016-07-19 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2016-07-19 by Ady TZIDON (Solution Posted, 5 Comments)
Denver is not the issue (in Word Problems)
Posted on 2016-07-18 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2016-07-18 by Ady TZIDON (No Solution Yet, 5 Comments)
Not too high, not too low (in Just Math)
Posted on 2016-07-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-07-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Find the killer (in Liars and Knights) Rating: 5.00
Posted on 2016-06-20 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2016-06-20 by Ady TZIDON (Solution Posted, 5 Comments)
Go for the midpoint (in Geometry) Rating: 2.00
Posted on 2016-06-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-06-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Comparing two events (in Probability)
Posted on 2016-06-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-06-15 by Ady TZIDON (No Solution Yet, 3 Comments)
A recursive sequence (in Sequences)
Posted on 2016-06-06 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2016-06-06 by Ady TZIDON (No Solution Yet, 0 Comments)
Save our souls (in Games) Rating: 4.00
Posted on 2016-06-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-06-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Three expressions - same value (in Just Math)
Posted on 2016-06-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-06-02 by Ady TZIDON (No Solution Yet, 3 Comments)
No fours on my odometer (in Just Math)
Posted on 2016-06-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-06-02 by Ady TZIDON (No Solution Yet, 2 Comments)
List the expressionist numbers (in Numbers)
Posted on 2016-05-30 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2016-05-30 by Ady TZIDON (No Solution Yet, 10 Comments)
Power of 2 (in Numbers) Rating: 5.00
Posted on 2016-05-27 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2016-05-27 by Ady TZIDON (No Solution Yet, 6 Comments)
Wanted: gifted numbers (in Numbers)
Posted on 2016-05-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-05-24 by Ady TZIDON (No Solution Yet, 1 Comments)
A comprehensive list (in Word Problems) Rating: 3.00
Posted on 2016-05-19 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-05-19 by Ady TZIDON (No Solution Yet, 4 Comments)
A direct count (in Famous Riddles) Rating: 3.00
Posted on 2016-05-19 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-05-19 by Ady TZIDON (No Solution Yet, 4 Comments)
Grid exercise (in Just Math) Rating: 5.00
Posted on 2016-05-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-05-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Rocking moves (in Logic) Rating: 5.00
Posted on 2016-05-17 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2016-05-17 by Ady TZIDON (Solution Posted, 3 Comments)
A cube with missing row (in Numbers)
Posted on 2016-05-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-05-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Two distinct questions (in Just Math)
Posted on 2016-05-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-05-13 by Ady TZIDON (No Solution Yet, 1 Comments)
From challenge to change (in Word Problems) Rating: 5.00
Posted on 2016-05-12 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2016-05-12 by Ady TZIDON (Solution Posted, 4 Comments)
Icosahedron addressed (in Geometry)
Posted on 2016-05-11 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-05-11 by Ady TZIDON (No Solution Yet, 2 Comments)
Tanya's puzzle (in Logic) Rating: 4.00
Posted on 2016-05-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2016-05-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Is it true? (in Just Math) Rating: 3.00
Posted on 2016-05-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-05-02 by Ady TZIDON (No Solution Yet, 2 Comments)
TO and FRO (in Just Math) Rating: 3.00
Posted on 2016-04-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-04-25 by Ady TZIDON (No Solution Yet, 4 Comments)
The heavy couple (in Weights and Scales)
Posted on 2016-04-22 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2016-04-22 by Ady TZIDON (Solution Posted, 5 Comments)
A clever promotion (in Cryptography) Rating: 5.00
Posted on 2016-04-21 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-04-21 by Ady TZIDON (No Solution Yet, 2 Comments)
Never on Sunday (in Liars and Knights)
Posted on 2016-04-21 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2016-04-21 by Ady TZIDON (Solution Posted, 3 Comments)
The only odd untouchable (in Numbers)
Posted on 2016-04-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-04-12 by Ady TZIDON (No Solution Yet, 1 Comments)
A Pythagorean triangle (in Numbers) Rating: 5.00
Posted on 2016-04-08 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2016-04-08 by Ady TZIDON (No Solution Yet, 5 Comments)
Not a common alphametic (in Just Math)
Posted on 2016-04-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-04-01 by Ady TZIDON (No Solution Yet, 2 Comments)
4 partitions, same product (in Numbers)
Posted on 2016-03-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-03-31 by Ady TZIDON (No Solution Yet, 1 Comments)
A scrabblematic problem (in General)
Posted on 2016-03-25 by Ady TZIDON (Solution Posted, 15 Comments)
Posted on 2016-03-25 by Ady TZIDON (Solution Posted, 15 Comments)
Percentage quickie (in Numbers) Rating: 3.00
Posted on 2016-03-14 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2016-03-14 by Ady TZIDON (Solution Posted, 1 Comments)
To-day is Monday & a PIday (in Numbers)
Posted on 2016-03-14 by Ady TZIDON (No Solution Yet, 13 Comments)
Posted on 2016-03-14 by Ady TZIDON (No Solution Yet, 13 Comments)
Matryoshka Nesting Primes (in Numbers)
Posted on 2016-03-03 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2016-03-03 by Ady TZIDON (No Solution Yet, 11 Comments)
Within the Galaxy (in Just Math) Rating: 3.00
Posted on 2016-02-28 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2016-02-28 by Ady TZIDON (Solution Posted, 2 Comments)
My four numbers (in Just Math) Rating: 4.33
Posted on 2016-02-24 by Ady TZIDON (Solution Posted, 12 Comments)
Posted on 2016-02-24 by Ady TZIDON (Solution Posted, 12 Comments)
Equal products and sums (in Just Math)
Posted on 2016-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
4 labeled coins (in Weights and Scales) Rating: 3.00
Posted on 2016-02-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-02-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Proving a theorem (in Geometry) Rating: 3.00
Posted on 2016-02-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-02-12 by Ady TZIDON (No Solution Yet, 1 Comments)
How high the moon tonight (in Numbers)
Posted on 2016-02-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-02-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Three in a row (in Numbers) Rating: 2.50
Posted on 2016-02-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-02-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Interesting representation (in Numbers) Rating: 5.00
Posted on 2016-02-08 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2016-02-08 by Ady TZIDON (No Solution Yet, 6 Comments)
Fifty-fifty (in Just Math) Rating: 3.00
Posted on 2016-02-05 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-02-05 by Ady TZIDON (No Solution Yet, 2 Comments)
a version of NIM (in Games) Rating: 4.00
Posted on 2016-02-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2016-02-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Square in Pascal's triangle (in Just Math)
Posted on 2016-02-03 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2016-02-03 by Ady TZIDON (No Solution Yet, 0 Comments)
The real McCoy (in Weights and Scales)
Posted on 2016-01-29 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2016-01-29 by Ady TZIDON (No Solution Yet, 1 Comments)
Erase the right 90 (in Numbers) Rating: 4.00
Posted on 2016-01-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2016-01-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Evaluate probabilities (in Probability)
Posted on 2016-01-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-01-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Find the next two numbers (in Sequences)
Posted on 2016-01-21 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2016-01-21 by Ady TZIDON (Solution Posted, 4 Comments)
9 coins prob (in Weights and Scales) Rating: 3.00
Posted on 2016-01-18 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2016-01-18 by Ady TZIDON (No Solution Yet, 6 Comments)
Product equals sum (in Just Math) Rating: 2.00
Posted on 2016-01-17 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2016-01-17 by Ady TZIDON (No Solution Yet, 6 Comments)
Family tree (in Logic) Rating: 5.00
Posted on 2016-01-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2016-01-15 by Ady TZIDON (No Solution Yet, 2 Comments)
6 coins (in Weights and Scales) Rating: 4.25
Posted on 2016-01-13 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2016-01-13 by Ady TZIDON (Solution Posted, 10 Comments)
Expose ambiguity (in Logic) Rating: 3.00
Posted on 2016-01-13 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2016-01-13 by Ady TZIDON (No Solution Yet, 5 Comments)
A math symbol (in Numbers) Rating: 3.33
Posted on 2016-01-08 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2016-01-08 by Ady TZIDON (No Solution Yet, 10 Comments)
Twenty deposits (in Just Math) Rating: 3.00
Posted on 2016-01-04 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2016-01-04 by Ady TZIDON (Solution Posted, 4 Comments)
A five letter word (in Word Problems)
Posted on 2015-12-28 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2015-12-28 by Ady TZIDON (No Solution Yet, 6 Comments)
From pie to numbers (in Numbers) Rating: 3.00
Posted on 2015-12-27 by Ady TZIDON (No Solution Yet, 16 Comments)
Posted on 2015-12-27 by Ady TZIDON (No Solution Yet, 16 Comments)
Ten cities (in Cryptography) Rating: 4.00
Posted on 2015-12-24 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-12-24 by Ady TZIDON (Solution Posted, 1 Comments)
5-2=1 (in Word Problems) Rating: 3.00
Posted on 2015-12-21 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-12-21 by Ady TZIDON (No Solution Yet, 5 Comments)
9-letter word III (in Just Math) Rating: 3.50
Posted on 2015-12-11 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2015-12-11 by Ady TZIDON (Solution Posted, 8 Comments)
A peculiar triangular number (in Numbers)
Posted on 2015-12-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-12-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Hold your horses (in General) Rating: 5.00
Posted on 2015-12-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-12-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Show me the moNey (in Numbers) Rating: 3.00
Posted on 2015-12-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-12-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Reversible hours (in Shapes) Rating: 3.00
Posted on 2015-12-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-12-07 by Ady TZIDON (No Solution Yet, 4 Comments)
Simple conclusion (in Just Math) Rating: 3.00
Posted on 2015-12-02 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-12-02 by Ady TZIDON (No Solution Yet, 1 Comments)
Get the right product (in Just Math)
Posted on 2015-12-01 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-12-01 by Ady TZIDON (No Solution Yet, 5 Comments)
Daylight Saving (in Cryptography) Rating: 5.00
Posted on 2015-12-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-12-01 by Ady TZIDON (No Solution Yet, 4 Comments)
Increasing sequences (in Just Math)
Posted on 2015-11-30 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-11-30 by Ady TZIDON (Solution Posted, 3 Comments)
No primes here (in Sequences) Rating: 5.00
Posted on 2015-11-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-11-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Coin contest (in Games) Rating: 5.00
Posted on 2015-11-27 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-11-27 by Ady TZIDON (No Solution Yet, 5 Comments)
Wise Russell (in Tricks) Rating: 5.00
Posted on 2015-11-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-11-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Biggest and smallest (in Just Math)
Posted on 2015-11-24 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-11-24 by Ady TZIDON (Solution Posted, 2 Comments)
Generalizing II (in Sequences) Rating: 4.00
Posted on 2015-11-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-11-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Italiano vero (in Just Math) Rating: 3.00
Posted on 2015-11-16 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2015-11-16 by Ady TZIDON (Solution Posted, 5 Comments)
Cryptajoke XII (in Cryptography) Rating: 4.33
Posted on 2015-11-16 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-11-16 by Ady TZIDON (No Solution Yet, 2 Comments)
9-letter word II (in Sequences) Rating: 5.00
Posted on 2015-11-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-11-13 by Ady TZIDON (No Solution Yet, 1 Comments)
6 or less liars (in Liars and Knights) Rating: 3.50
Posted on 2015-11-13 by Ady TZIDON (Solution Posted, 17 Comments)
Posted on 2015-11-13 by Ady TZIDON (Solution Posted, 17 Comments)
Count the palindromes (in Just Math)
Posted on 2015-11-11 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2015-11-11 by Ady TZIDON (No Solution Yet, 7 Comments)
Cryptajoke XI (in Cryptography) Rating: 3.00
Posted on 2015-11-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-11-09 by Ady TZIDON (No Solution Yet, 1 Comments)
Triangle's bisector theorem (in Geometry)
Posted on 2015-11-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-11-07 by Ady TZIDON (No Solution Yet, 2 Comments)
Matching pairs II (in Word Problems) Rating: 2.00
Posted on 2015-11-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-11-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Seven numbers for seven words (in Cryptography) Rating: 4.00
Posted on 2015-11-02 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-11-02 by Ady TZIDON (Solution Posted, 1 Comments)
Incredible, but solvable (in Just Math)
Posted on 2015-10-30 by Ady TZIDON (No Solution Yet, 13 Comments)
Posted on 2015-10-30 by Ady TZIDON (No Solution Yet, 13 Comments)
A plural of a plural (in Word Problems) Rating: 5.00
Posted on 2015-10-30 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2015-10-30 by Ady TZIDON (Solution Posted, 5 Comments)
Make up your mind (in Word Problems)
Posted on 2015-10-28 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-10-28 by Ady TZIDON (No Solution Yet, 3 Comments)
A canonical representation (in Just Math)
Posted on 2015-10-27 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2015-10-27 by Ady TZIDON (No Solution Yet, 0 Comments)
n-digit ... n-th power (in Numbers)
Posted on 2015-10-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-10-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Factorials & factorions (in Numbers) Rating: 5.00
Posted on 2015-10-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-10-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Will you find it? (in Cryptography)
Posted on 2015-10-19 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-10-19 by Ady TZIDON (Solution Posted, 2 Comments)
8 digit rhyme (in Cryptography) Rating: 3.00
Posted on 2015-10-08 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-10-08 by Ady TZIDON (No Solution Yet, 1 Comments)
Probability of constant leading (in Probability)
Posted on 2015-10-05 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2015-10-05 by Ady TZIDON (Solution Posted, 5 Comments)
All are... (in Word Problems) Rating: 1.00
Posted on 2015-10-02 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-10-02 by Ady TZIDON (No Solution Yet, 4 Comments)
Permutations count (in Numbers) Rating: 3.00
Posted on 2015-10-01 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2015-10-01 by Ady TZIDON (Solution Posted, 10 Comments)
Nine forever (in Just Math) Rating: 4.00
Posted on 2015-09-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-09-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Black and white socks (in Probability)
Posted on 2015-09-29 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2015-09-29 by Ady TZIDON (No Solution Yet, 8 Comments)
Quit as a winner (in Games) Rating: 5.00
Posted on 2015-09-24 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2015-09-24 by Ady TZIDON (No Solution Yet, 9 Comments)
Three brothers (in Just Math) Rating: 3.00
Posted on 2015-09-23 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-09-23 by Ady TZIDON (Solution Posted, 2 Comments)
Hexakosioihexekontahexaphobia (in General)
Posted on 2015-09-22 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-09-22 by Ady TZIDON (Solution Posted, 3 Comments)
2 easy cryptajokes (VIII) (in Cryptography)
Posted on 2015-09-18 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-09-18 by Ady TZIDON (Solution Posted, 3 Comments)
The golden ratio (in Just Math) Rating: 4.00
Posted on 2015-09-16 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2015-09-16 by Ady TZIDON (Solution Posted, 6 Comments)
Coordinating arrival (in Just Math)
Posted on 2015-09-15 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-09-15 by Ady TZIDON (Solution Posted, 2 Comments)
C reverses into F (in Numbers) Rating: 3.00
Posted on 2015-09-14 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2015-09-14 by Ady TZIDON (No Solution Yet, 10 Comments)
Believe it or not (in Word Problems) Rating: 3.00
Posted on 2015-09-08 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-09-08 by Ady TZIDON (Solution Posted, 1 Comments)
Surprising answer II (in Numbers) Rating: 4.00
Posted on 2015-09-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-09-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Six countries (in General) Rating: 3.00
Posted on 2015-09-04 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2015-09-04 by Ady TZIDON (No Solution Yet, 8 Comments)
Cryptajoke VII (in Word Problems) Rating: 4.00
Posted on 2015-08-31 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-08-31 by Ady TZIDON (Solution Posted, 3 Comments)
Be fruitful and multiply. (in Numbers) Rating: 3.00
Posted on 2015-08-27 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-08-27 by Ady TZIDON (No Solution Yet, 1 Comments)
Explain it (in Word Problems) Rating: 3.00
Posted on 2015-08-25 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-08-25 by Ady TZIDON (Solution Posted, 1 Comments)
Three coins (in Probability) Rating: 2.00
Posted on 2015-08-20 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2015-08-20 by Ady TZIDON (Solution Posted, 10 Comments)
A self-working card trick (in Tricks)
Posted on 2015-08-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-08-19 by Ady TZIDON (No Solution Yet, 2 Comments)
This or that? (in Probability) Rating: 4.00
Posted on 2015-08-19 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2015-08-19 by Ady TZIDON (Solution Posted, 4 Comments)
Eight efficient blacksmiths (in Just Math) Rating: 4.00
Posted on 2015-08-13 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2015-08-13 by Ady TZIDON (Solution Posted, 4 Comments)
Largest pandigital prime. (in Numbers)
Posted on 2015-08-07 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-08-07 by Ady TZIDON (No Solution Yet, 1 Comments)
Consonants galore (in Word Problems)
Posted on 2015-08-04 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-08-04 by Ady TZIDON (Solution Posted, 3 Comments)
26 letters needed (in Word Problems)
Posted on 2015-07-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-07-31 by Ady TZIDON (No Solution Yet, 1 Comments)
Pythagorean triplet generator (in Numbers) Rating: 5.00
Posted on 2015-07-28 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-07-28 by Ady TZIDON (No Solution Yet, 1 Comments)
No letters (in Cryptography) Rating: 4.00
Posted on 2015-07-27 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-07-27 by Ady TZIDON (Solution Posted, 3 Comments)
Matching pairs (in Numbers) Rating: 5.00
Posted on 2015-07-24 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-07-24 by Ady TZIDON (Solution Posted, 1 Comments)
What's in a name? (in Word Problems)
Posted on 2015-07-23 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-07-23 by Ady TZIDON (Solution Posted, 3 Comments)
Nine trolls (in Just Math) Rating: 3.00
Posted on 2015-07-23 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2015-07-23 by Ady TZIDON (No Solution Yet, 9 Comments)
One of the countries (in Word Problems)
Posted on 2015-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
My travel II.....CIAO! (in General)
Posted on 2015-07-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-07-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Guessing suit (in Probability) Rating: 4.00
Posted on 2015-07-20 by Ady TZIDON (No Solution Yet, 13 Comments)
Posted on 2015-07-20 by Ady TZIDON (No Solution Yet, 13 Comments)
Getting the right count (in Numbers) Rating: 3.00
Posted on 2015-07-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-07-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Something is "some night" (in Word Problems)
Posted on 2015-07-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-07-13 by Ady TZIDON (No Solution Yet, 1 Comments)
Primary problem III (in Numbers) Rating: 5.00
Posted on 2015-07-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-07-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Just give it a trial (in General) Rating: 3.00
Posted on 2015-06-26 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-06-26 by Ady TZIDON (Solution Posted, 3 Comments)
Factorial creates prime (in Numbers)
Posted on 2015-06-26 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-06-26 by Ady TZIDON (No Solution Yet, 5 Comments)
It is not 8^5 (in Numbers) Rating: 5.00
Posted on 2015-06-24 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-06-24 by Ady TZIDON (Solution Posted, 3 Comments)
Put up or shut up (in Word Problems)
Posted on 2015-06-23 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-06-23 by Ady TZIDON (No Solution Yet, 5 Comments)
7 idiomatic phrases (in Word Problems)
Posted on 2015-06-17 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-06-17 by Ady TZIDON (Solution Posted, 2 Comments)
On his way to fitness (in Just Math)
Posted on 2015-06-15 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2015-06-15 by Ady TZIDON (No Solution Yet, 10 Comments)
It sounds Greek to me (in General) Rating: 5.00
Posted on 2015-06-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-06-11 by Ady TZIDON (No Solution Yet, 3 Comments)
5 76993 408621 (in Numbers) Rating: 5.00
Posted on 2015-06-04 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-06-04 by Ady TZIDON (Solution Posted, 3 Comments)
Powered s.o.d. (in Numbers) Rating: 3.00
Posted on 2015-05-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-05-20 by Ady TZIDON (No Solution Yet, 2 Comments)
A sequence or not a sequence? (in Logic)
Posted on 2015-05-18 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-05-18 by Ady TZIDON (Solution Posted, 3 Comments)
Euler on trial (in Numbers) Rating: 1.00
Posted on 2015-05-14 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-05-14 by Ady TZIDON (No Solution Yet, 4 Comments)
112233....99 scrambled (in Numbers)
Posted on 2015-05-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-05-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Cabbagehead’s neighbors (in Word Problems)
Posted on 2015-05-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-05-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Rhyme time (in Word Problems) Rating: 5.00
Posted on 2015-05-07 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2015-05-07 by Ady TZIDON (Solution Posted, 6 Comments)
Equality in pentagon (in Geometry) Rating: 3.00
Posted on 2015-05-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-05-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Catch as you catch can (in Numbers)
Posted on 2015-05-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-05-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Words with tripled letters (in Word Problems)
Posted on 2015-04-30 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-04-30 by Ady TZIDON (Solution Posted, 1 Comments)
Cryptajoke V (in Cryptography) Rating: 3.00
Posted on 2015-04-30 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-04-30 by Ady TZIDON (Solution Posted, 2 Comments)
Is it possible? (in Famous Riddles) Rating: 4.00
Posted on 2015-04-27 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-04-27 by Ady TZIDON (No Solution Yet, 4 Comments)
Not solvable by computer (?) (in Word Problems)
Posted on 2015-04-24 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2015-04-24 by Ady TZIDON (No Solution Yet, 6 Comments)
Geographic entities (in General) Rating: 3.00
Posted on 2015-04-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-04-20 by Ady TZIDON (No Solution Yet, 3 Comments)
N as a sum of factorials (in Just Math)
Posted on 2015-04-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-04-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Some powers decomposed (in Numbers)
Posted on 2015-04-16 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-04-16 by Ady TZIDON (No Solution Yet, 5 Comments)
Name the location (in Word Problems)
Posted on 2015-04-16 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-04-16 by Ady TZIDON (Solution Posted, 1 Comments)
Famous movie quotations (in General) Rating: 3.00
Posted on 2015-04-14 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-04-14 by Ady TZIDON (No Solution Yet, 4 Comments)
From product to town (in Word Problems)
Posted on 2015-04-10 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-04-10 by Ady TZIDON (Solution Posted, 2 Comments)
Some sums (in Numbers) Rating: 4.00
Posted on 2015-04-07 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-04-07 by Ady TZIDON (Solution Posted, 3 Comments)
Vive la petite différence! (in Paradoxes) Rating: 4.00
Posted on 2015-04-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-04-06 by Ady TZIDON (No Solution Yet, 3 Comments)
General advice (in Cryptography) Rating: 5.00
Posted on 2015-04-03 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-04-03 by Ady TZIDON (Solution Posted, 3 Comments)
Buddy, can you spare a buck? (in Numbers)
Posted on 2015-04-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-04-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Oxymora galore (in Word Problems) Rating: 5.00
Posted on 2015-03-27 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-03-27 by Ady TZIDON (Solution Posted, 1 Comments)
Animal to animal (in Word Problems)
Posted on 2015-03-27 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-03-27 by Ady TZIDON (Solution Posted, 2 Comments)
Neighboring tickets (in Numbers) Rating: 4.00
Posted on 2015-03-26 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-03-26 by Ady TZIDON (No Solution Yet, 2 Comments)
Win some, lose some II (in Just Math)
Posted on 2015-03-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-03-25 by Ady TZIDON (No Solution Yet, 1 Comments)
A State of Contradictions (in Word Problems)
Posted on 2015-03-24 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-03-24 by Ady TZIDON (No Solution Yet, 2 Comments)
Phrase a question III (in Word Problems)
Posted on 2015-03-23 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-03-23 by Ady TZIDON (No Solution Yet, 1 Comments)
A walking contradiction (in Word Problems)
Posted on 2015-03-20 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-03-20 by Ady TZIDON (Solution Posted, 1 Comments)
+Q-U : Quite Unusual (in Word Problems)
Posted on 2015-03-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-03-17 by Ady TZIDON (No Solution Yet, 2 Comments)
Location, location, location (in Geometry) Rating: 4.00
Posted on 2015-03-12 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2015-03-12 by Ady TZIDON (No Solution Yet, 8 Comments)
Squeeze between neighbors (in Numbers)
Posted on 2015-03-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-03-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Cryptajoke IV (in Logic) Rating: 4.00
Posted on 2015-03-06 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2015-03-06 by Ady TZIDON (Solution Posted, 1 Comments)
Find the last member (in Sequences)
Posted on 2015-03-05 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-03-05 by Ady TZIDON (No Solution Yet, 1 Comments)
Contradict Goldbach (in Numbers) Rating: 1.00
Posted on 2015-03-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-03-03 by Ady TZIDON (No Solution Yet, 3 Comments)
Phrase a question II (in Numbers) Rating: 2.00
Posted on 2015-03-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-03-03 by Ady TZIDON (No Solution Yet, 2 Comments)
Academia, defeated, yesterday (in Word Problems)
Posted on 2015-02-26 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2015-02-26 by Ady TZIDON (Solution Posted, 6 Comments)
Next year vs the current year (in Numbers) Rating: 4.00
Posted on 2015-02-25 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-02-25 by Ady TZIDON (No Solution Yet, 5 Comments)
Cryptajoke III (in Logic) Rating: 4.00
Posted on 2015-02-23 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-02-23 by Ady TZIDON (Solution Posted, 3 Comments)
Be consistent (in Numbers) Rating: 5.00
Posted on 2015-02-20 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-02-20 by Ady TZIDON (No Solution Yet, 3 Comments)
An ancient Egyptian problem (in Just Math)
Posted on 2015-02-13 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2015-02-13 by Ady TZIDON (No Solution Yet, 5 Comments)
Possibility of restoring (in Just Math) Rating: 3.00
Posted on 2015-02-10 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-02-10 by Ady TZIDON (No Solution Yet, 1 Comments)
A simple gematria (in Numbers) Rating: 5.00
Posted on 2015-02-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-02-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Mr Mar & Mrs Bles (in Numbers) Rating: 3.00
Posted on 2015-02-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2015-02-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Quite a normal question (in Riddles) Rating: 5.00
Posted on 2015-02-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-02-02 by Ady TZIDON (No Solution Yet, 3 Comments)
Eliot Ness meets Paul Erdős (in Numbers) Rating: 3.00
Posted on 2015-01-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-01-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Possible or not? (in Just Math) Rating: 4.00
Posted on 2015-01-17 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2015-01-17 by Ady TZIDON (No Solution Yet, 6 Comments)
Three conditions define a triplet (in Just Math)
Posted on 2015-01-14 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-01-14 by Ady TZIDON (No Solution Yet, 2 Comments)
T times T creates another T?? (in Just Math) Rating: 4.00
Posted on 2015-01-11 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2015-01-11 by Ady TZIDON (Solution Posted, 8 Comments)
Next one(s), please (in Sequences) Rating: 4.00
Posted on 2015-01-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2015-01-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Cows and buffaloes. (in Just Math) Rating: 3.00
Posted on 2015-01-07 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2015-01-07 by Ady TZIDON (Solution Posted, 2 Comments)
More than a million, less than ten (in Just Math)
Posted on 2015-01-06 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2015-01-06 by Ady TZIDON (No Solution Yet, 4 Comments)
Dates data distribution (in Just Math)
Posted on 2015-01-05 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2015-01-05 by Ady TZIDON (No Solution Yet, 3 Comments)
25k if beheaded (in Just Math) Rating: 3.00
Posted on 2015-01-01 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2015-01-01 by Ady TZIDON (Solution Posted, 3 Comments)
Neither is prime (in Just Math) Rating: 3.00
Posted on 2014-12-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2014-12-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Pentagon's constant (in Geometry) Rating: 4.00
Posted on 2014-12-27 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-12-27 by Ady TZIDON (No Solution Yet, 1 Comments)
4d divides 5d (in Just Math) Rating: 5.00
Posted on 2014-12-26 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-12-26 by Ady TZIDON (Solution Posted, 2 Comments)
Count the Liars (in Liars and Knights) Rating: 3.00
Posted on 2014-12-23 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2014-12-23 by Ady TZIDON (Solution Posted, 6 Comments)
The medians of medians (in Just Math) Rating: 4.00
Posted on 2014-12-20 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2014-12-20 by Ady TZIDON (Solution Posted, 6 Comments)
Tic-tac-toe related (in Logic) Rating: 2.00
Posted on 2014-12-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2014-12-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Which is which (in Cryptography) Rating: 4.00
Posted on 2014-12-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2014-12-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Eight distances (in Just Math) Rating: 4.00
Posted on 2014-12-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-12-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Out of this word (in Word Problems)
Posted on 2014-12-08 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2014-12-08 by Ady TZIDON (No Solution Yet, 9 Comments)
Extraordinaire (in General) Rating: 2.33
Posted on 2014-11-25 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2014-11-25 by Ady TZIDON (No Solution Yet, 8 Comments)
Two cities + (in Cryptography) Rating: 4.00
Posted on 2014-11-21 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2014-11-21 by Ady TZIDON (No Solution Yet, 8 Comments)
A symmetric relation (in Just Math) Rating: 4.00
Posted on 2014-11-19 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2014-11-19 by Ady TZIDON (Solution Posted, 5 Comments)
Just a tiny addition (in Just Math)
Posted on 2014-11-18 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2014-11-18 by Ady TZIDON (Solution Posted, 5 Comments)
An aSCending SCale (in Word Problems)
Posted on 2014-11-14 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2014-11-14 by Ady TZIDON (Solution Posted, 7 Comments)
My numbers (in Numbers) Rating: 3.00
Posted on 2014-11-14 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-11-14 by Ady TZIDON (Solution Posted, 3 Comments)
Balancing weights (in Weights and Scales) Rating: 3.00
Posted on 2014-11-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2014-11-06 by Ady TZIDON (No Solution Yet, 2 Comments)
Win some, lose some (in Logic) Rating: 1.00
Posted on 2014-11-03 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-11-03 by Ady TZIDON (Solution Posted, 1 Comments)
Friendship paradox (in Paradoxes) Rating: 4.00
Posted on 2014-10-31 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-10-31 by Ady TZIDON (No Solution Yet, 4 Comments)
Analyzing change (in Just Math) Rating: 3.00
Posted on 2014-10-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-10-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Curious concatenations (in Numbers)
Posted on 2014-10-23 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-10-23 by Ady TZIDON (No Solution Yet, 1 Comments)
Extending tic-tac-toe (in Just Math)
Posted on 2014-10-23 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2014-10-23 by Ady TZIDON (No Solution Yet, 6 Comments)
Beaujolais Nouveau Day (in Probability) Rating: 4.00
Posted on 2014-10-22 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2014-10-22 by Ady TZIDON (No Solution Yet, 7 Comments)
One by two (in Numbers) Rating: 3.50
Posted on 2014-10-22 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2014-10-22 by Ady TZIDON (Solution Posted, 6 Comments)
Distinct Decimal Digits (in Numbers) Rating: 4.00
Posted on 2014-10-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-10-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Open, Sesame! (in Probability) Rating: 2.00
Posted on 2014-10-14 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2014-10-14 by Ady TZIDON (No Solution Yet, 3 Comments)
A versatile number (in Numbers) Rating: 5.00
Posted on 2014-10-13 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2014-10-13 by Ady TZIDON (No Solution Yet, 6 Comments)
Zeroless or not? (in Probability) Rating: 4.00
Posted on 2014-10-07 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-10-07 by Ady TZIDON (Solution Posted, 1 Comments)
Why and when (in General) Rating: 5.00
Posted on 2014-10-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-10-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Get them up (in Just Math) Rating: 4.00
Posted on 2014-10-01 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2014-10-01 by Ady TZIDON (No Solution Yet, 5 Comments)
Determine divisibility (in Just Math)
Posted on 2014-09-29 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-09-29 by Ady TZIDON (Solution Posted, 1 Comments)
Only one basic solution II (in General) Rating: 3.00
Posted on 2014-09-26 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-09-26 by Ady TZIDON (Solution Posted, 1 Comments)
Fill in (in Sequences) Rating: 5.00
Posted on 2014-09-24 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2014-09-24 by Ady TZIDON (Solution Posted, 6 Comments)
Twelve (!) tribes (?) II (in Word Problems) Rating: 3.00
Posted on 2014-09-23 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2014-09-23 by Ady TZIDON (Solution Posted, 4 Comments)
A Monotonous Menu (in General) Rating: 3.00
Posted on 2014-09-19 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-09-19 by Ady TZIDON (No Solution Yet, 1 Comments)
1 to 8 in 5*5 grid (in Word Problems)
Posted on 2014-09-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-09-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Comparing weights (in Weights and Scales) Rating: 4.00
Posted on 2014-09-09 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2014-09-09 by Ady TZIDON (No Solution Yet, 3 Comments)
2 pandigital equations (in Numbers)
Posted on 2014-09-05 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-09-05 by Ady TZIDON (No Solution Yet, 4 Comments)
Fibo's quickie (in Logic) Rating: 4.00
Posted on 2014-09-03 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2014-09-03 by Ady TZIDON (Solution Posted, 4 Comments)
Grandma's age (in Just Math) Rating: 2.00
Posted on 2014-08-20 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2014-08-20 by Ady TZIDON (No Solution Yet, 8 Comments)
Three subsets (in Just Math) Rating: 5.00
Posted on 2014-08-15 by Ady TZIDON (No Solution Yet, 14 Comments)
Posted on 2014-08-15 by Ady TZIDON (No Solution Yet, 14 Comments)
Guessing ages (in Tricks) Rating: 5.00
Posted on 2014-08-08 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2014-08-08 by Ady TZIDON (Solution Posted, 4 Comments)
Done? No need? ...UNDO! (in Word Problems)
Posted on 2014-08-05 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-08-05 by Ady TZIDON (No Solution Yet, 4 Comments)
The decisive straw (in Probability)
Posted on 2014-07-25 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2014-07-25 by Ady TZIDON (No Solution Yet, 6 Comments)
Getting 13 (in Just Math) Rating: 4.00
Posted on 2014-07-21 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2014-07-21 by Ady TZIDON (Solution Posted, 5 Comments)
The twelve(!) tribes(?) (in General) Rating: 5.00
Posted on 2014-07-20 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-07-20 by Ady TZIDON (Solution Posted, 3 Comments)
Confucius advises (in Word Problems)
Posted on 2014-07-14 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-07-14 by Ady TZIDON (Solution Posted, 2 Comments)
A periodical fraction (in Numbers) Rating: 1.50
Posted on 2014-07-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-07-11 by Ady TZIDON (Solution Posted, 3 Comments)
To anagram segments is important,but... (in Cryptography) Rating: 4.00
Posted on 2014-07-10 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-07-10 by Ady TZIDON (Solution Posted, 1 Comments)
Only one basic solution (in Just Math)
Posted on 2014-07-02 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-07-02 by Ady TZIDON (Solution Posted, 2 Comments)
Neither a borrower nor a lender be, (in Just Math)
Posted on 2014-07-01 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-07-01 by Ady TZIDON (Solution Posted, 2 Comments)
Some dinner! (in Cryptography) Rating: 3.00
Posted on 2014-06-29 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2014-06-29 by Ady TZIDON (No Solution Yet, 2 Comments)
F. to P. generator (in Numbers) Rating: 5.00
Posted on 2014-06-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-06-25 by Ady TZIDON (No Solution Yet, 4 Comments)
scitemahpla II (in Word Problems) Rating: 2.00
Posted on 2014-06-25 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2014-06-25 by Ady TZIDON (No Solution Yet, 5 Comments)
Date cubes ENUMERATION (in Sequences)
Posted on 2014-06-19 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2014-06-19 by Ady TZIDON (No Solution Yet, 0 Comments)
Three Digit Trial revisited (in Numbers) Rating: 3.50
Posted on 2014-06-17 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-06-17 by Ady TZIDON (Solution Posted, 2 Comments)
Ways and means (in Tricks) Rating: 1.75
Posted on 2014-06-05 by Ady TZIDON (Solution Posted, 11 Comments)
Posted on 2014-06-05 by Ady TZIDON (Solution Posted, 11 Comments)
Ninety nine coins plus one catch (in Weights and Scales)
Posted on 2014-06-01 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2014-06-01 by Ady TZIDON (No Solution Yet, 7 Comments)
The pandigital student (in Cryptography) Rating: 3.00
Posted on 2014-05-29 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-05-29 by Ady TZIDON (Solution Posted, 3 Comments)
M.A.R. observed: (in Word Problems)
Posted on 2014-05-28 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-05-28 by Ady TZIDON (Solution Posted, 3 Comments)
A progressive addition (in Numbers)
Posted on 2014-05-19 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-05-19 by Ady TZIDON (Solution Posted, 3 Comments)
Pandigital concatenations (in Numbers)
Posted on 2014-05-10 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-05-10 by Ady TZIDON (Solution Posted, 1 Comments)
Not in every dictionary (in Cryptography)
Posted on 2014-05-09 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-05-09 by Ady TZIDON (Solution Posted, 3 Comments)
The end of the line (in Cryptography)
Posted on 2014-04-29 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2014-04-29 by Ady TZIDON (Solution Posted, 5 Comments)
I / O resolved (in Logic) Rating: 5.00
Posted on 2014-04-28 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2014-04-28 by Ady TZIDON (Solution Posted, 4 Comments)
Increase or decrease by one (in Numbers)
Posted on 2014-04-22 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-04-22 by Ady TZIDON (Solution Posted, 2 Comments)
My phone is 2543663 (in Probability) Rating: 3.50
Posted on 2014-04-15 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2014-04-15 by Ady TZIDON (Solution Posted, 5 Comments)
The right subset (in Word Problems)
Posted on 2014-04-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2014-04-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Upside down (OEIS A045573) (in Numbers)
Posted on 2014-04-11 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2014-04-11 by Ady TZIDON (Solution Posted, 6 Comments)
A Quicky III (in Numbers) Rating: 5.00
Posted on 2014-04-09 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2014-04-09 by Ady TZIDON (No Solution Yet, 9 Comments)
How high? (in Numbers) Rating: 4.00
Posted on 2014-03-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2014-03-25 by Ady TZIDON (No Solution Yet, 4 Comments)
Solution or solutions (in Sequences)
Posted on 2014-03-20 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2014-03-20 by Ady TZIDON (No Solution Yet, 6 Comments)
Summing the factorials (in Numbers)
Posted on 2014-03-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2014-03-15 by Ady TZIDON (No Solution Yet, 3 Comments)
The famous card players (in General)
Posted on 2014-03-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-03-14 by Ady TZIDON (No Solution Yet, 1 Comments)
A permuted multiplication (in Numbers)
Posted on 2014-03-11 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2014-03-11 by Ady TZIDON (No Solution Yet, 10 Comments)
Pythagorean triangle (in Just Math)
Posted on 2014-03-10 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-03-10 by Ady TZIDON (Solution Posted, 2 Comments)
Riding the time machine (in General)
Posted on 2014-02-24 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2014-02-24 by Ady TZIDON (No Solution Yet, 2 Comments)
Do you like mushrooms? (in General) Rating: 3.00
Posted on 2014-02-10 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2014-02-10 by Ady TZIDON (No Solution Yet, 3 Comments)
An after-dinner enigma (in Just Math)
Posted on 2014-02-05 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-02-05 by Ady TZIDON (No Solution Yet, 1 Comments)
Geography? Spelling? Logic? (in Tricks)
Posted on 2014-01-24 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2014-01-24 by Ady TZIDON (Solution Posted, 4 Comments)
An economic reality (in General) Rating: 3.00
Posted on 2014-01-23 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-01-23 by Ady TZIDON (Solution Posted, 1 Comments)
Maximizing Matches Model (in Numbers)
Posted on 2014-01-22 by Ady TZIDON (Solution Posted, 16 Comments)
Posted on 2014-01-22 by Ady TZIDON (Solution Posted, 16 Comments)
Probing the prob. (in Probability) Rating: 3.00
Posted on 2014-01-21 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2014-01-21 by Ady TZIDON (Solution Posted, 5 Comments)
Created after midnight (in General) Rating: 3.00
Posted on 2014-01-20 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-01-20 by Ady TZIDON (Solution Posted, 2 Comments)
Summing up the dividers' dividers (in Numbers)
Posted on 2014-01-15 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2014-01-15 by Ady TZIDON (No Solution Yet, 1 Comments)
U * I = $$$ (in General) Rating: 3.00
Posted on 2014-01-14 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-01-14 by Ady TZIDON (Solution Posted, 1 Comments)
Coin flips (in Numbers) Rating: 4.00
Posted on 2014-01-10 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2014-01-10 by Ady TZIDON (Solution Posted, 1 Comments)
A missing proverb (in General) Rating: 3.00
Posted on 2014-01-09 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2014-01-09 by Ady TZIDON (Solution Posted, 3 Comments)
A missing symbol (in Word Problems)
Posted on 2014-01-08 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2014-01-08 by Ady TZIDON (Solution Posted, 2 Comments)
A neat trick (in Tricks) Rating: 4.00
Posted on 2013-12-26 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2013-12-26 by Ady TZIDON (Solution Posted, 5 Comments)
Madam Marathon (in Just Math) Rating: 2.00
Posted on 2013-12-23 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2013-12-23 by Ady TZIDON (Solution Posted, 1 Comments)
Algorithm requested (in Algorithms) Rating: 4.00
Posted on 2013-12-18 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2013-12-18 by Ady TZIDON (Solution Posted, 3 Comments)
One out of ninety (in Weights and Scales) Rating: 4.00
Posted on 2013-12-17 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2013-12-17 by Ady TZIDON (Solution Posted, 7 Comments)
The unhappy end(= 58623L* ) (in General) Rating: 4.50
Posted on 2013-12-13 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2013-12-13 by Ady TZIDON (Solution Posted, 4 Comments)
Last but not the least (in Numbers)
Posted on 2013-12-12 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2013-12-12 by Ady TZIDON (Solution Posted, 8 Comments)
Eve & Odd (in Numbers) Rating: 4.00
Posted on 2013-11-22 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2013-11-22 by Ady TZIDON (Solution Posted, 6 Comments)
LCM equation (in Numbers) Rating: 4.33
Posted on 2013-11-19 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2013-11-19 by Ady TZIDON (No Solution Yet, 6 Comments)
5*90 90 5*6 1605 2##6X (in General) Rating: 4.33
Posted on 2013-11-07 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2013-11-07 by Ady TZIDON (Solution Posted, 1 Comments)
Two ways (in Just Math) Rating: 3.67
Posted on 2013-10-31 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2013-10-31 by Ady TZIDON (Solution Posted, 2 Comments)
Take the right one (in Weights and Scales) Rating: 3.00
Posted on 2013-10-18 by Ady TZIDON (No Solution Yet, 18 Comments)
Posted on 2013-10-18 by Ady TZIDON (No Solution Yet, 18 Comments)
No multiplication allowed (in Numbers)
Posted on 2013-10-17 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2013-10-17 by Ady TZIDON (Solution Posted, 8 Comments)
Geo-alphametic (in General) Rating: 3.00
Posted on 2013-10-16 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2013-10-16 by Ady TZIDON (Solution Posted, 2 Comments)
Hobsons choice(?) (in Numbers) Rating: 4.00
Posted on 2013-10-10 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2013-10-10 by Ady TZIDON (No Solution Yet, 9 Comments)
Restore from scratches (in Numbers) Rating: 4.00
Posted on 2013-10-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-10-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Two cars, three towns (in Just Math) Rating: 2.00
Posted on 2013-10-07 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2013-10-07 by Ady TZIDON (No Solution Yet, 3 Comments)
First Floobles Factorization (in General) Rating: 4.00
Posted on 2013-10-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-10-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Listing cubes (in Numbers) Rating: 4.50
Posted on 2013-10-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2013-10-01 by Ady TZIDON (No Solution Yet, 3 Comments)
Prime with distinct digits (in Numbers)
Posted on 2013-09-18 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2013-09-18 by Ady TZIDON (Solution Posted, 2 Comments)
Staggered divisibility (in Numbers)
Posted on 2013-09-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2013-09-16 by Ady TZIDON (No Solution Yet, 3 Comments)
From hints to a missing digit (in Numbers)
Posted on 2013-09-13 by Ady TZIDON (No Solution Yet, 0 Comments)
Posted on 2013-09-13 by Ady TZIDON (No Solution Yet, 0 Comments)
Next year (in Numbers) Rating: 4.00
Posted on 2013-09-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-09-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Z for Zero, X for siX (in Just Math)
Posted on 2013-08-22 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2013-08-22 by Ady TZIDON (No Solution Yet, 4 Comments)
Seven - with and without (in Numbers) Rating: 3.67
Posted on 2013-08-09 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2013-08-09 by Ady TZIDON (No Solution Yet, 6 Comments)
Not applicable to driving (in Riddles)
Posted on 2013-08-08 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2013-08-08 by Ady TZIDON (Solution Posted, 2 Comments)
Remember that (in Numbers) Rating: 3.67
Posted on 2013-07-30 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2013-07-30 by Ady TZIDON (Solution Posted, 4 Comments)
Dominoes and checkerboard (in General)
Posted on 2013-07-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2013-07-23 by Ady TZIDON (No Solution Yet, 3 Comments)
Only one untrue statement (in Logic) Rating: 3.00
Posted on 2013-07-18 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2013-07-18 by Ady TZIDON (Solution Posted, 10 Comments)
4b4N & after (in Numbers) Rating: 3.00
Posted on 2013-07-17 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2013-07-17 by Ady TZIDON (No Solution Yet, 3 Comments)
S.o.d. classification (in Just Math)
Posted on 2013-07-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-07-15 by Ady TZIDON (No Solution Yet, 2 Comments)
My uncle's habits (in Probability) Rating: 4.67
Posted on 2013-06-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2013-06-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Words, words, numbers (in Word Problems)
Posted on 2013-06-21 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-06-21 by Ady TZIDON (No Solution Yet, 2 Comments)
All bases comply (in Numbers) Rating: 2.00
Posted on 2013-06-17 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-06-17 by Ady TZIDON (No Solution Yet, 1 Comments)
A G E S III (in Just Math) Rating: 2.50
Posted on 2013-06-11 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-06-11 by Ady TZIDON (No Solution Yet, 1 Comments)
You & you (in Word Problems) Rating: 4.00
Posted on 2013-05-30 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2013-05-30 by Ady TZIDON (Solution Posted, 6 Comments)
Play or Pass (in Probability) Rating: 3.00
Posted on 2013-05-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2013-05-28 by Ady TZIDON (No Solution Yet, 4 Comments)
Compare two problems (in Just Math)
Posted on 2013-05-20 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2013-05-20 by Ady TZIDON (Solution Posted, 3 Comments)
It is simpler than you think (in Just Math)
Posted on 2013-05-18 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-05-18 by Ady TZIDON (No Solution Yet, 1 Comments)
No comments (in Numbers) Rating: 3.50
Posted on 2013-05-07 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2013-05-07 by Ady TZIDON (No Solution Yet, 7 Comments)
Three in, one out (in Just Math) Rating: 3.50
Posted on 2013-04-29 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2013-04-29 by Ady TZIDON (No Solution Yet, 5 Comments)
Overheard in a London eatery's kitchen (in General) Rating: 3.67
Posted on 2013-04-19 by Ady TZIDON (No Solution Yet, 9 Comments)
Posted on 2013-04-19 by Ady TZIDON (No Solution Yet, 9 Comments)
Maximizing the ratio (in Just Math) Rating: 2.00
Posted on 2013-04-18 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-04-18 by Ady TZIDON (No Solution Yet, 1 Comments)
As low as possible (in Numbers) Rating: 2.00
Posted on 2013-04-12 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2013-04-12 by Ady TZIDON (Solution Posted, 6 Comments)
Bonjour, Pascal ! (in Just Math) Rating: 4.00
Posted on 2013-04-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-04-10 by Ady TZIDON (No Solution Yet, 2 Comments)
Pass the beer (in Probability) Rating: 3.00
Posted on 2013-04-09 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2013-04-09 by Ady TZIDON (No Solution Yet, 8 Comments)
The sum = the product (in Just Math)
Posted on 2013-04-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-04-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Mission impossible (in Just Math) Rating: 4.00
Posted on 2013-04-03 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2013-04-03 by Ady TZIDON (Solution Posted, 5 Comments)
D is harder than C (in Just Math) Rating: 4.67
Posted on 2013-03-29 by Ady TZIDON (Solution Posted, 11 Comments)
Posted on 2013-03-29 by Ady TZIDON (Solution Posted, 11 Comments)
Ten items to classify (in General) Rating: 5.00
Posted on 2013-03-27 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2013-03-27 by Ady TZIDON (Solution Posted, 8 Comments)
Bartender to his apprentice: (in Numbers)
Posted on 2013-03-26 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2013-03-26 by Ady TZIDON (Solution Posted, 5 Comments)
Inequality challenged (in Just Math)
Posted on 2013-03-19 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-03-19 by Ady TZIDON (No Solution Yet, 1 Comments)
Math spelling (in Word Problems) Rating: 5.00
Posted on 2013-03-04 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2013-03-04 by Ady TZIDON (Solution Posted, 9 Comments)
Trespassing (in Cryptography) Rating: 5.00
Posted on 2013-03-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2013-03-01 by Ady TZIDON (No Solution Yet, 1 Comments)
Underground occupation (in Cryptography) Rating: 5.00
Posted on 2013-02-26 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2013-02-26 by Ady TZIDON (No Solution Yet, 4 Comments)
On congruent numbers (in Numbers) Rating: 5.00
Posted on 2013-02-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2013-02-24 by Ady TZIDON (No Solution Yet, 4 Comments)
Not represented (in Numbers) Rating: 4.00
Posted on 2013-02-20 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2013-02-20 by Ady TZIDON (No Solution Yet, 4 Comments)
From proverbs to alphametics (in General)
Posted on 2013-02-15 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2013-02-15 by Ady TZIDON (No Solution Yet, 8 Comments)
9 distinct digits in 3 products (in Numbers) Rating: 4.00
Posted on 2013-01-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2013-01-23 by Ady TZIDON (No Solution Yet, 2 Comments)
A cancellation fallacy (in Just Math)
Posted on 2013-01-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2013-01-18 by Ady TZIDON (No Solution Yet, 3 Comments)
Off by one (in Numbers) Rating: 4.00
Posted on 2013-01-18 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2013-01-18 by Ady TZIDON (No Solution Yet, 7 Comments)
Prime it remains (in Numbers) Rating: 4.00
Posted on 2013-01-15 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2013-01-15 by Ady TZIDON (Solution Posted, 4 Comments)
Two urns (in Probability) Rating: 4.00
Posted on 2013-01-10 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2013-01-10 by Ady TZIDON (No Solution Yet, 5 Comments)
Told by an integer (in Numbers) Rating: 4.00
Posted on 2013-01-04 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2013-01-04 by Ady TZIDON (Solution Posted, 3 Comments)
The Seven Romans (in Logic) Rating: 5.00
Posted on 2013-01-02 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2013-01-02 by Ady TZIDON (Solution Posted, 7 Comments)
Just arithmetic signs (in Numbers) Rating: 2.33
Posted on 2012-12-28 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2012-12-28 by Ady TZIDON (Solution Posted, 10 Comments)
11 does not divide any of them (in Numbers)
Posted on 2012-12-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-12-26 by Ady TZIDON (No Solution Yet, 3 Comments)
One digit is missing (in General) Rating: 5.00
Posted on 2012-12-21 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2012-12-21 by Ady TZIDON (Solution Posted, 3 Comments)
All(?) about SEQ (in Numbers) Rating: 5.00
Posted on 2012-12-19 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2012-12-19 by Ady TZIDON (No Solution Yet, 1 Comments)
From Poland with love (in Just Math)
Posted on 2012-12-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-12-13 by Ady TZIDON (No Solution Yet, 2 Comments)
No integer solutions (in Just Math) Rating: 3.00
Posted on 2012-12-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2012-12-10 by Ady TZIDON (No Solution Yet, 4 Comments)
Why prime remainder? (in Just Math)
Posted on 2012-12-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2012-12-03 by Ady TZIDON (No Solution Yet, 1 Comments)
A square is a cube (in Numbers) Rating: 3.00
Posted on 2012-11-29 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-11-29 by Ady TZIDON (No Solution Yet, 2 Comments)
3 cubes? - not always (in Just Math)
Posted on 2012-11-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2012-11-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Getting closer (in Just Math) Rating: 4.50
Posted on 2012-11-25 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2012-11-25 by Ady TZIDON (No Solution Yet, 6 Comments)
3402 02 N1 509 873 (in General) Rating: 5.00
Posted on 2012-11-23 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2012-11-23 by Ady TZIDON (No Solution Yet, 5 Comments)
5 partitions (in Just Math) Rating: 3.00
Posted on 2012-11-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-11-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Yes we can (in Numbers) Rating: 2.50
Posted on 2012-11-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-11-20 by Ady TZIDON (No Solution Yet, 2 Comments)
2-way traffic (in Word Problems) Rating: 4.00
Posted on 2012-11-14 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2012-11-14 by Ady TZIDON (No Solution Yet, 7 Comments)
Long(infinite?) way to create a palindrome (in Numbers)
Posted on 2012-11-04 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2012-11-04 by Ady TZIDON (Solution Posted, 2 Comments)
Baking the best pie (in Numbers) Rating: 4.00
Posted on 2012-11-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-11-02 by Ady TZIDON (No Solution Yet, 2 Comments)
Quips et al (in Word Problems) Rating: 3.00
Posted on 2012-10-30 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2012-10-30 by Ady TZIDON (No Solution Yet, 8 Comments)
Away from home (in Just Math) Rating: 5.00
Posted on 2012-10-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-10-23 by Ady TZIDON (No Solution Yet, 2 Comments)
Big B's theorem (in Geometry) Rating: 2.00
Posted on 2012-10-14 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-10-14 by Ady TZIDON (No Solution Yet, 2 Comments)
Center to center (in Geometry) Rating: 4.00
Posted on 2012-10-10 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-10-10 by Ady TZIDON (No Solution Yet, 3 Comments)
A tricky ricky quicky (in Sequences)
Posted on 2012-10-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-10-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Prove it, please (in Just Math) Rating: 5.00
Posted on 2012-10-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-10-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Four Four-letter words (in General)
Posted on 2012-10-03 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2012-10-03 by Ady TZIDON (Solution Posted, 3 Comments)
Very disappointed (in Cryptography)
Posted on 2012-09-26 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2012-09-26 by Ady TZIDON (Solution Posted, 2 Comments)
Neighboring strangers (in Just Math)
Posted on 2012-09-24 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2012-09-24 by Ady TZIDON (Solution Posted, 1 Comments)
Though this be madness, yet there is method in it... (in Numbers) Rating: 4.33
Posted on 2012-09-20 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2012-09-20 by Ady TZIDON (Solution Posted, 6 Comments)
US or NOT (in Cryptography) Rating: 4.67
Posted on 2012-09-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-09-18 by Ady TZIDON (No Solution Yet, 2 Comments)
A frugal sequence (in Numbers) Rating: 5.00
Posted on 2012-09-14 by Ady TZIDON (Solution Posted, 13 Comments)
Posted on 2012-09-14 by Ady TZIDON (Solution Posted, 13 Comments)
by L. Euler (in General) Rating: 4.33
Posted on 2012-09-08 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2012-09-08 by Ady TZIDON (No Solution Yet, 8 Comments)
A palindrome product (in Numbers) Rating: 5.00
Posted on 2012-09-05 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2012-09-05 by Ady TZIDON (Solution Posted, 4 Comments)
5th powers (in Numbers) Rating: 3.50
Posted on 2012-08-30 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2012-08-30 by Ady TZIDON (No Solution Yet, 4 Comments)
A Pythagorean triplet (in Numbers) Rating: 5.00
Posted on 2012-08-28 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2012-08-28 by Ady TZIDON (Solution Posted, 4 Comments)
Less than ten thou (in Numbers) Rating: 5.00
Posted on 2012-08-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2012-08-25 by Ady TZIDON (No Solution Yet, 1 Comments)
Name it correctly (in Logic) Rating: 5.00
Posted on 2012-08-16 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2012-08-16 by Ady TZIDON (No Solution Yet, 8 Comments)
From Russia with love (in Weights and Scales)
Posted on 2012-08-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-08-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Equality for all (in Just Math) Rating: 3.67
Posted on 2012-07-29 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-07-29 by Ady TZIDON (No Solution Yet, 3 Comments)
Gossip (in Just Math) Rating: 4.50
Posted on 2012-07-26 by Ady TZIDON (No Solution Yet, 12 Comments)
Posted on 2012-07-26 by Ady TZIDON (No Solution Yet, 12 Comments)
Pigeons again (in Sequences) Rating: 5.00
Posted on 2012-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
1232 is HERE (in Numbers) Rating: 3.00
Posted on 2012-07-18 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-07-18 by Ady TZIDON (No Solution Yet, 2 Comments)
99 for odd powers (in Numbers) Rating: 3.67
Posted on 2012-07-14 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-07-14 by Ady TZIDON (No Solution Yet, 3 Comments)
GIPSY ROAD: (in General) Rating: 5.00
Posted on 2012-07-12 by Ady TZIDON (No Solution Yet, 20 Comments)
Posted on 2012-07-12 by Ady TZIDON (No Solution Yet, 20 Comments)
Angles missing (in Geometry) Rating: 4.00
Posted on 2012-07-09 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2012-07-09 by Ady TZIDON (Solution Posted, 1 Comments)
The Magnificent Eleven (in Numbers) Rating: 4.00
Posted on 2012-07-07 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-07-07 by Ady TZIDON (No Solution Yet, 3 Comments)
Getting closer to three targets (in Numbers) Rating: 5.00
Posted on 2012-07-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-07-01 by Ady TZIDON (No Solution Yet, 2 Comments)
Sum of primes is a square (in Numbers) Rating: 5.00
Posted on 2012-06-29 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2012-06-29 by Ady TZIDON (Solution Posted, 2 Comments)
One is k times the other (in Numbers)
Posted on 2012-06-25 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2012-06-25 by Ady TZIDON (No Solution Yet, 7 Comments)
Complementary, my dear Watson (in Numbers) Rating: 5.00
Posted on 2012-06-22 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2012-06-22 by Ady TZIDON (No Solution Yet, 6 Comments)
Prime, anyway (in Numbers) Rating: 3.00
Posted on 2012-06-17 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2012-06-17 by Ady TZIDON (Solution Posted, 2 Comments)
Find this cube! (in Numbers) Rating: 4.20
Posted on 2012-06-16 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2012-06-16 by Ady TZIDON (Solution Posted, 4 Comments)
Equal digits (in Numbers) Rating: 4.00
Posted on 2012-06-11 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2012-06-11 by Ady TZIDON (Solution Posted, 7 Comments)
Use all nine (in Numbers) Rating: 5.00
Posted on 2012-06-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2012-06-08 by Ady TZIDON (No Solution Yet, 3 Comments)
The smallest sum (in Numbers) Rating: 4.67
Posted on 2012-06-02 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2012-06-02 by Ady TZIDON (No Solution Yet, 8 Comments)
Ready, action,CUT! (in Geometry) Rating: 3.00
Posted on 2012-05-16 by Ady TZIDON (Solution Posted, 19 Comments)
Posted on 2012-05-16 by Ady TZIDON (Solution Posted, 19 Comments)
Words of warning (in Cryptography) Rating: 4.00
Posted on 2012-05-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-05-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Mirror, mirror (in Numbers) Rating: 5.00
Posted on 2012-05-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2012-05-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Why did she do it? (in General) Rating: 5.00
Posted on 2012-04-19 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2012-04-19 by Ady TZIDON (Solution Posted, 5 Comments)
Loops in PI (in Logic) Rating: 4.50
Posted on 2012-04-15 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2012-04-15 by Ady TZIDON (Solution Posted, 5 Comments)
No comments (in General) Rating: 4.50
Posted on 2012-04-12 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2012-04-12 by Ady TZIDON (Solution Posted, 3 Comments)
The wine is so-so, but... (in Numbers) Rating: 3.75
Posted on 2012-04-06 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2012-04-06 by Ady TZIDON (Solution Posted, 8 Comments)
Proof needed (in Just Math) Rating: 4.00
Posted on 2012-03-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2012-03-30 by Ady TZIDON (No Solution Yet, 2 Comments)
From primes to palindrome (in Numbers) Rating: 5.00
Posted on 2012-03-24 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2012-03-24 by Ady TZIDON (Solution Posted, 7 Comments)
Math. competition, (in Just Math) Rating: 3.75
Posted on 2012-03-21 by Ady TZIDON (No Solution Yet, 103 Comments)
Posted on 2012-03-21 by Ady TZIDON (No Solution Yet, 103 Comments)
3 causes 7 (in Numbers) Rating: 4.00
Posted on 2012-03-10 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2012-03-10 by Ady TZIDON (Solution Posted, 2 Comments)
Equality of ends (in Numbers) Rating: 4.00
Posted on 2012-03-04 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2012-03-04 by Ady TZIDON (Solution Posted, 1 Comments)
Letter code (in Sequences) Rating: 4.50
Posted on 2012-02-27 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2012-02-27 by Ady TZIDON (Solution Posted, 5 Comments)
S.o.d . of s.o.d ,,, (in Just Math) Rating: 4.00
Posted on 2012-02-21 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2012-02-21 by Ady TZIDON (Solution Posted, 4 Comments)
39 does it (in Just Math) Rating: 5.00
Posted on 2012-02-19 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2012-02-19 by Ady TZIDON (Solution Posted, 4 Comments)
Decimal base? Of course... (in Tricks) Rating: 4.50
Posted on 2012-02-13 by Ady TZIDON (Solution Posted, 15 Comments)
Posted on 2012-02-13 by Ady TZIDON (Solution Posted, 15 Comments)
Special primes (in Numbers) Rating: 5.00
Posted on 2012-02-12 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2012-02-12 by Ady TZIDON (Solution Posted, 3 Comments)
Three digits - all prime! (in Numbers) Rating: 3.67
Posted on 2012-02-01 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2012-02-01 by Ady TZIDON (Solution Posted, 4 Comments)
Covering a rectangle by circles (in Shapes) Rating: 4.50
Posted on 2012-01-30 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2012-01-30 by Ady TZIDON (Solution Posted, 6 Comments)
18 digits (in Just Math) Rating: 3.00
Posted on 2012-01-12 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2012-01-12 by Ady TZIDON (No Solution Yet, 5 Comments)
Produce a product (in Just Math) Rating: 3.67
Posted on 2012-01-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2012-01-09 by Ady TZIDON (No Solution Yet, 4 Comments)
More about 1729 (in Numbers) Rating: 5.00
Posted on 2012-01-04 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2012-01-04 by Ady TZIDON (Solution Posted, 8 Comments)
It is not that easy (in General) Rating: 3.67
Posted on 2012-01-01 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2012-01-01 by Ady TZIDON (Solution Posted, 3 Comments)
Fair play (in Probability) Rating: 3.00
Posted on 2011-12-30 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-12-30 by Ady TZIDON (Solution Posted, 3 Comments)
A repunit number (in Numbers) Rating: 4.00
Posted on 2011-12-26 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2011-12-26 by Ady TZIDON (Solution Posted, 5 Comments)
Two expressions (in Numbers) Rating: 5.00
Posted on 2011-12-22 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2011-12-22 by Ady TZIDON (Solution Posted, 1 Comments)
Find my number (in Numbers) Rating: 4.00
Posted on 2011-12-19 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2011-12-19 by Ady TZIDON (Solution Posted, 10 Comments)
5-digit period (in Just Math) Rating: 4.00
Posted on 2011-12-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2011-12-16 by Ady TZIDON (No Solution Yet, 3 Comments)
Getting gadgets galore (in Just Math) Rating: 5.00
Posted on 2011-12-12 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2011-12-12 by Ady TZIDON (No Solution Yet, 3 Comments)
Not all are equal (in Just Math) Rating: 5.00
Posted on 2011-12-03 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2011-12-03 by Ady TZIDON (No Solution Yet, 8 Comments)
Over fourteen (in Sequences) Rating: 3.67
Posted on 2011-12-02 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-12-02 by Ady TZIDON (No Solution Yet, 4 Comments)
All in the family (in Just Math) Rating: 4.50
Posted on 2011-11-20 by Ady TZIDON (No Solution Yet, 17 Comments)
Posted on 2011-11-20 by Ady TZIDON (No Solution Yet, 17 Comments)
Twins, triplets and more (in Just Math) Rating: 4.00
Posted on 2011-11-17 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2011-11-17 by Ady TZIDON (No Solution Yet, 5 Comments)
Some relation! (in Just Math) Rating: 3.00
Posted on 2011-11-11 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2011-11-11 by Ady TZIDON (No Solution Yet, 10 Comments)
A quicky: (in Numbers) Rating: 5.00
Posted on 2011-11-07 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2011-11-07 by Ady TZIDON (No Solution Yet, 1 Comments)
Special dice (in Just Math) Rating: 4.00
Posted on 2011-10-30 by Ady TZIDON (No Solution Yet, 18 Comments)
Posted on 2011-10-30 by Ady TZIDON (No Solution Yet, 18 Comments)
Lasts a year (in Just Math) Rating: 3.67
Posted on 2011-10-24 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2011-10-24 by Ady TZIDON (No Solution Yet, 5 Comments)
Three customers (in Logic) Rating: 3.40
Posted on 2011-10-17 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2011-10-17 by Ady TZIDON (Solution Posted, 9 Comments)
Avoid ambiguity (in General) Rating: 4.00
Posted on 2011-10-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2011-10-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Build one get two free (in Numbers) Rating: 4.50
Posted on 2011-10-08 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2011-10-08 by Ady TZIDON (No Solution Yet, 5 Comments)
Seconds, anyone? (in Just Math) Rating: 5.00
Posted on 2011-10-03 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-10-03 by Ady TZIDON (Solution Posted, 2 Comments)
RARE SURE QUORA (in Just Math) Rating: 5.00
Posted on 2011-10-02 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2011-10-02 by Ady TZIDON (Solution Posted, 8 Comments)
Some pedigree! (in Logic) Rating: 5.00
Posted on 2011-09-26 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-09-26 by Ady TZIDON (No Solution Yet, 4 Comments)
Q: What time is it now, dear R.? (in Just Math) Rating: 4.67
Posted on 2011-09-19 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2011-09-19 by Ady TZIDON (Solution Posted, 9 Comments)
1st+2nd=3rd (in Numbers) Rating: 5.00
Posted on 2011-09-14 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-09-14 by Ady TZIDON (Solution Posted, 3 Comments)
Catering to sportsmen's whims (in Numbers) Rating: 5.00
Posted on 2011-09-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-09-04 by Ady TZIDON (No Solution Yet, 4 Comments)
Melting the ice (in General) Rating: 5.00
Posted on 2011-09-01 by Ady TZIDON (No Solution Yet, 12 Comments)
Posted on 2011-09-01 by Ady TZIDON (No Solution Yet, 12 Comments)
It is not hard (in Word Problems) Rating: 5.00
Posted on 2011-08-29 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2011-08-29 by Ady TZIDON (No Solution Yet, 8 Comments)
Icy winter shifting (in Just Math) Rating: 5.00
Posted on 2011-08-24 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2011-08-24 by Ady TZIDON (Solution Posted, 4 Comments)
Mine & thine (in Just Math) Rating: 5.00
Posted on 2011-08-19 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2011-08-19 by Ady TZIDON (No Solution Yet, 6 Comments)
As easy as... ABC? ...123? (in General) Rating: 4.00
Posted on 2011-08-18 by Ady TZIDON (Solution Posted, 12 Comments)
Posted on 2011-08-18 by Ady TZIDON (Solution Posted, 12 Comments)
Divisible? Yes and No. (in Just Math)
Posted on 2011-08-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2011-08-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Wherefrom thou comest, mylady? (in Logic) Rating: 4.67
Posted on 2011-08-11 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2011-08-11 by Ady TZIDON (Solution Posted, 4 Comments)
Rating our neighbours (in Geometry) Rating: 3.00
Posted on 2011-08-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2011-08-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Prove irrationality (in Just Math) Rating: 5.00
Posted on 2011-08-07 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2011-08-07 by Ady TZIDON (Solution Posted, 4 Comments)
Get out of here... (in General) Rating: 5.00
Posted on 2011-08-05 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2011-08-05 by Ady TZIDON (Solution Posted, 1 Comments)
Inflation or deflation? (in General) Rating: 5.00
Posted on 2011-07-25 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2011-07-25 by Ady TZIDON (No Solution Yet, 3 Comments)
At the party (in Logic) Rating: 4.00
Posted on 2011-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2011-07-22 by Ady TZIDON (No Solution Yet, 2 Comments)
S-olve T-his (in Word Problems) Rating: 3.67
Posted on 2011-07-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-07-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Close neighbors (in Just Math) Rating: 5.00
Posted on 2011-07-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-07-13 by Ady TZIDON (No Solution Yet, 4 Comments)
Antimagic square (in Probability) Rating: 5.00
Posted on 2011-07-12 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2011-07-12 by Ady TZIDON (No Solution Yet, 7 Comments)
Brevity is the soul of wit (in Word Problems)
Posted on 2011-07-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-07-09 by Ady TZIDON (No Solution Yet, 4 Comments)
2B or B2? (in Word Problems) Rating: 4.00
Posted on 2011-07-06 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2011-07-06 by Ady TZIDON (Solution Posted, 5 Comments)
Yosi will be 13 years old (in General) Rating: 5.00
Posted on 2011-07-04 by Ady TZIDON (Solution Posted, 11 Comments)
Posted on 2011-07-04 by Ady TZIDON (Solution Posted, 11 Comments)
As easy as abc (in Just Math) Rating: 5.00
Posted on 2011-06-28 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2011-06-28 by Ady TZIDON (No Solution Yet, 10 Comments)
Who said to whom and when? (in Cryptography) Rating: 4.00
Posted on 2011-06-13 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-06-13 by Ady TZIDON (Solution Posted, 3 Comments)
Decode the double code (in Just Math) Rating: 4.00
Posted on 2011-06-09 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2011-06-09 by Ady TZIDON (No Solution Yet, 7 Comments)
Missing digits (in Just Math) Rating: 3.67
Posted on 2011-06-06 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2011-06-06 by Ady TZIDON (No Solution Yet, 8 Comments)
Lies all around (in Liars and Knights) Rating: 4.67
Posted on 2011-06-04 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2011-06-04 by Ady TZIDON (Solution Posted, 10 Comments)
Tzidon's enigma (in Numbers) Rating: 4.00
Posted on 2011-06-01 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2011-06-01 by Ady TZIDON (Solution Posted, 1 Comments)
Take five (in Just Math) Rating: 3.67
Posted on 2011-05-22 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-05-22 by Ady TZIDON (Solution Posted, 2 Comments)
How young is he? (in Just Math) Rating: 3.00
Posted on 2011-05-16 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-05-16 by Ady TZIDON (Solution Posted, 2 Comments)
Sloane will not help you (in Sequences) Rating: 4.33
Posted on 2011-05-15 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2011-05-15 by Ady TZIDON (Solution Posted, 5 Comments)
A Royal Question (in Word Problems) Rating: 4.50
Posted on 2011-05-13 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-05-13 by Ady TZIDON (Solution Posted, 2 Comments)
0 9357254 (in General) Rating: 5.00
Posted on 2011-04-29 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2011-04-29 by Ady TZIDON (Solution Posted, 5 Comments)
S.O.S. partition needed!! (in Just Math)
Posted on 2011-04-23 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2011-04-23 by Ady TZIDON (Solution Posted, 1 Comments)
Not a fraction (in Just Math) Rating: 4.00
Posted on 2011-04-11 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-04-11 by Ady TZIDON (Solution Posted, 3 Comments)
Find the area (in Numbers) Rating: 4.00
Posted on 2011-04-08 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2011-04-08 by Ady TZIDON (Solution Posted, 5 Comments)
The median is shorter (in Geometry)
Posted on 2011-04-04 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2011-04-04 by Ady TZIDON (Solution Posted, 1 Comments)
Almost equal (in Just Math) Rating: 3.75
Posted on 2011-04-01 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2011-04-01 by Ady TZIDON (Solution Posted, 10 Comments)
Back to the base (in Numbers) Rating: 3.00
Posted on 2011-03-30 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-03-30 by Ady TZIDON (Solution Posted, 3 Comments)
Twice true (in Numbers) Rating: 4.50
Posted on 2011-03-24 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-03-24 by Ady TZIDON (Solution Posted, 3 Comments)
So many quintuplets... (in Just Math) Rating: 4.00
Posted on 2011-03-17 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2011-03-17 by Ady TZIDON (Solution Posted, 3 Comments)
How far can you go? (in Numbers) Rating: 4.00
Posted on 2011-03-04 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2011-03-04 by Ady TZIDON (No Solution Yet, 11 Comments)
Who`s on the right base? (in Numbers)
Posted on 2011-03-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2011-03-03 by Ady TZIDON (No Solution Yet, 1 Comments)
Three W answers (in Numbers) Rating: 4.00
Posted on 2011-02-27 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2011-02-27 by Ady TZIDON (No Solution Yet, 6 Comments)
Get the last digit II (in Numbers) Rating: 4.00
Posted on 2011-02-23 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-02-23 by Ady TZIDON (No Solution Yet, 4 Comments)
EVEN remains even (in Numbers) Rating: 4.00
Posted on 2011-02-20 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-02-20 by Ady TZIDON (Solution Posted, 2 Comments)
a) is easy, b) is not (in Just Math) Rating: 3.00
Posted on 2011-02-18 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2011-02-18 by Ady TZIDON (No Solution Yet, 8 Comments)
Upgrade to 13 (in Weights and Scales) Rating: 3.00
Posted on 2011-02-16 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2011-02-16 by Ady TZIDON (No Solution Yet, 4 Comments)
How would you bet? (in Probability)
Posted on 2011-02-13 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-02-13 by Ady TZIDON (Solution Posted, 2 Comments)
Find the area (in Geometry) Rating: 3.67
Posted on 2011-02-09 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2011-02-09 by Ady TZIDON (Solution Posted, 4 Comments)
Forty- niners (in Numbers) Rating: 4.00
Posted on 2011-02-01 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2011-02-01 by Ady TZIDON (No Solution Yet, 7 Comments)
Get the last digit (in Numbers) Rating: 4.00
Posted on 2011-01-17 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2011-01-17 by Ady TZIDON (Solution Posted, 2 Comments)
Scarce primes (in Numbers) Rating: 3.67
Posted on 2011-01-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2011-01-10 by Ady TZIDON (No Solution Yet, 10 Comments)
Pandigital and divisible (in Probability)
Posted on 2010-12-26 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-12-26 by Ady TZIDON (Solution Posted, 4 Comments)
Single or double (in Numbers) Rating: 4.00
Posted on 2010-12-24 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2010-12-24 by Ady TZIDON (No Solution Yet, 6 Comments)
Some strings attached (in Just Math)
Posted on 2010-12-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2010-12-19 by Ady TZIDON (No Solution Yet, 2 Comments)
Nine nine-digits results (in Just Math) Rating: 4.00
Posted on 2010-12-16 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2010-12-16 by Ady TZIDON (Solution Posted, 1 Comments)
Hail to thee, Sofia! (in Just Math) Rating: 3.00
Posted on 2010-12-13 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2010-12-13 by Ady TZIDON (No Solution Yet, 10 Comments)
Seven come eleven (in Numbers) Rating: 4.00
Posted on 2010-12-11 by Ady TZIDON (Solution Posted, 12 Comments)
Posted on 2010-12-11 by Ady TZIDON (Solution Posted, 12 Comments)
Mother of nine (in Just Math) Rating: 4.00
Posted on 2010-12-03 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2010-12-03 by Ady TZIDON (No Solution Yet, 5 Comments)
Music to your ears (in Word Problems)
Posted on 2010-11-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2010-11-28 by Ady TZIDON (No Solution Yet, 5 Comments)
Triangulating a hexagon. (in Just Math) Rating: 4.00
Posted on 2010-11-24 by Ady TZIDON (No Solution Yet, 7 Comments)
Posted on 2010-11-24 by Ady TZIDON (No Solution Yet, 7 Comments)
Dudeney revisited (in Cryptography) Rating: 5.00
Posted on 2010-11-20 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2010-11-20 by Ady TZIDON (No Solution Yet, 2 Comments)
srebmuN desreveR (in Just Math) Rating: 3.00
Posted on 2010-11-18 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-11-18 by Ady TZIDON (Solution Posted, 4 Comments)
Rolling to score (in Probability) Rating: 3.33
Posted on 2010-11-15 by Ady TZIDON (No Solution Yet, 17 Comments)
Posted on 2010-11-15 by Ady TZIDON (No Solution Yet, 17 Comments)
Who is afraid of 7 (or 23) ? (in Numbers)
Posted on 2010-11-08 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2010-11-08 by Ady TZIDON (No Solution Yet, 5 Comments)
OOO3= one out of three (in Just Math)
Posted on 2010-11-04 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2010-11-04 by Ady TZIDON (No Solution Yet, 8 Comments)
Abracadabra (in Word Problems) Rating: 3.00
Posted on 2010-10-29 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-10-29 by Ady TZIDON (Solution Posted, 3 Comments)
Few, but active (in Just Math) Rating: 1.00
Posted on 2010-10-26 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2010-10-26 by Ady TZIDON (No Solution Yet, 4 Comments)
5 conditions to get 2 results (in Just Math) Rating: 2.50
Posted on 2010-10-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2010-10-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Big, super and prime (in Numbers) Rating: 3.00
Posted on 2010-10-20 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2010-10-20 by Ady TZIDON (No Solution Yet, 8 Comments)
Look for the pairs (in Just Math) Rating: 4.00
Posted on 2010-10-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2010-10-15 by Ady TZIDON (No Solution Yet, 3 Comments)
And her true age is... (in Just Math) Rating: 2.50
Posted on 2010-10-14 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-10-14 by Ady TZIDON (Solution Posted, 3 Comments)
A square question (in Games) Rating: 3.00
Posted on 2010-10-12 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2010-10-12 by Ady TZIDON (Solution Posted, 2 Comments)
Three forever (in Tricks) Rating: 2.75
Posted on 2010-09-30 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2010-09-30 by Ady TZIDON (No Solution Yet, 5 Comments)
Nineteen triplets (in Just Math) Rating: 3.00
Posted on 2010-09-23 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2010-09-23 by Ady TZIDON (No Solution Yet, 11 Comments)
Rationalize by factorials (in Numbers) Rating: 3.50
Posted on 2010-09-22 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2010-09-22 by Ady TZIDON (Solution Posted, 2 Comments)
129 again (in Numbers) Rating: 3.33
Posted on 2010-09-15 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2010-09-15 by Ady TZIDON (No Solution Yet, 6 Comments)
Thrice three is nine (in Numbers) Rating: 4.50
Posted on 2010-09-11 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2010-09-11 by Ady TZIDON (No Solution Yet, 5 Comments)
Three circles (in Calculus) Rating: 5.00
Posted on 2010-09-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Posted on 2010-09-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Tennis,anyone? (in Probability) Rating: 5.00
Posted on 2010-09-07 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2010-09-07 by Ady TZIDON (Solution Posted, 7 Comments)
Four sevens and one one. (in Numbers)
Posted on 2010-09-06 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2010-09-06 by Ady TZIDON (Solution Posted, 8 Comments)
Nostra culpa (in Numbers) Rating: 3.00
Posted on 2010-09-03 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2010-09-03 by Ady TZIDON (No Solution Yet, 6 Comments)
Find my password (in Word Problems) Rating: 4.00
Posted on 2010-08-31 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2010-08-31 by Ady TZIDON (Solution Posted, 2 Comments)
Decode my message. (in Cryptography) Rating: 3.00
Posted on 2010-08-30 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2010-08-30 by Ady TZIDON (No Solution Yet, 2 Comments)
As easy as pie (in Word Problems) Rating: 3.00
Posted on 2010-08-26 by Ady TZIDON (Solution Posted, 17 Comments)
Posted on 2010-08-26 by Ady TZIDON (Solution Posted, 17 Comments)
Quite a Smithonian! (in Numbers) Rating: 3.00
Posted on 2010-08-21 by Ady TZIDON (No Solution Yet, 8 Comments)
Posted on 2010-08-21 by Ady TZIDON (No Solution Yet, 8 Comments)
Prime, but not forever (in Sequences) Rating: 3.00
Posted on 2010-08-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Posted on 2010-08-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Powerful and consecutive (in Numbers) Rating: 3.00
Posted on 2010-08-09 by Ady TZIDON (No Solution Yet, 16 Comments)
Posted on 2010-08-09 by Ady TZIDON (No Solution Yet, 16 Comments)
5 cubes representation (in Numbers) Rating: 4.00
Posted on 2010-07-31 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2010-07-31 by Ady TZIDON (No Solution Yet, 2 Comments)
Fibo composes (in Sequences) Rating: 3.67
Posted on 2010-07-21 by Ady TZIDON (No Solution Yet, 6 Comments)
Posted on 2010-07-21 by Ady TZIDON (No Solution Yet, 6 Comments)
Oddly divisible (in Just Math) Rating: 3.33
Posted on 2010-07-17 by Ady TZIDON (No Solution Yet, 5 Comments)
Posted on 2010-07-17 by Ady TZIDON (No Solution Yet, 5 Comments)
Restoring the erased (in Just Math) Rating: 4.00
Posted on 2010-07-14 by Ady TZIDON (No Solution Yet, 21 Comments)
Posted on 2010-07-14 by Ady TZIDON (No Solution Yet, 21 Comments)
FOUR OR LESS (in Numbers) Rating: 4.00
Posted on 2010-07-05 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-07-05 by Ady TZIDON (Solution Posted, 3 Comments)
Magma et al. (in Word Problems) Rating: 4.50
Posted on 2010-06-30 by Ady TZIDON (No Solution Yet, 10 Comments)
Posted on 2010-06-30 by Ady TZIDON (No Solution Yet, 10 Comments)
Do not D&D (in Word Problems) Rating: 3.00
Posted on 2010-06-28 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-06-28 by Ady TZIDON (Solution Posted, 3 Comments)
The coat of many (in Word Problems)
Posted on 2010-06-24 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2010-06-24 by Ady TZIDON (Solution Posted, 5 Comments)
Goldbach revisited (in Numbers) Rating: 3.00
Posted on 2010-06-12 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-06-12 by Ady TZIDON (Solution Posted, 4 Comments)
A Magic Die (in Probability) Rating: 4.50
Posted on 2010-06-10 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2010-06-10 by Ady TZIDON (Solution Posted, 8 Comments)
Chain Gang- a contest and a game (in Word Problems)
Posted on 2010-05-30 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-05-30 by Ady TZIDON (Solution Posted, 4 Comments)
Make it equal (in Numbers) Rating: 3.00
Posted on 2010-05-26 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2010-05-26 by Ady TZIDON (Solution Posted, 7 Comments)
Odd primes never die (in Numbers) Rating: 3.67
Posted on 2010-05-20 by Ady TZIDON (No Solution Yet, 11 Comments)
Posted on 2010-05-20 by Ady TZIDON (No Solution Yet, 11 Comments)
Let's count (in Numbers) Rating: 2.50
Posted on 2010-05-16 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-05-16 by Ady TZIDON (Solution Posted, 3 Comments)
Power of two (in Just Math) Rating: 4.00
Posted on 2010-05-12 by Ady TZIDON (Solution Posted, 1 Comments)
Posted on 2010-05-12 by Ady TZIDON (Solution Posted, 1 Comments)
Up and up (in Numbers) Rating: 4.00
Posted on 2010-05-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2010-05-04 by Ady TZIDON (No Solution Yet, 2 Comments)
Simple question gets a complicated answer (in Just Math) Rating: 3.00
Posted on 2010-05-02 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2010-05-02 by Ady TZIDON (Solution Posted, 5 Comments)
All the colors in (in Probability) Rating: 5.00
Posted on 2010-04-26 by Ady TZIDON (Solution Posted, 22 Comments)
Posted on 2010-04-26 by Ady TZIDON (Solution Posted, 22 Comments)
Using 128 digits (in Cryptography) Rating: 4.00
Posted on 2010-04-19 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2010-04-19 by Ady TZIDON (Solution Posted, 5 Comments)
Unique semiprime number (in Numbers)
Posted on 2010-04-17 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-04-17 by Ady TZIDON (Solution Posted, 3 Comments)
Four or else (in Numbers) Rating: 4.00
Posted on 2010-04-11 by Ady TZIDON (Solution Posted, 10 Comments)
Posted on 2010-04-11 by Ady TZIDON (Solution Posted, 10 Comments)
Outstanding numbers (in Word Problems) Rating: 4.00
Posted on 2010-04-06 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-04-06 by Ady TZIDON (Solution Posted, 4 Comments)
Try to crack the code. (in Word Problems) Rating: 4.00
Posted on 2010-04-04 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-04-04 by Ady TZIDON (Solution Posted, 4 Comments)
Any early warnings? (in Word Problems) Rating: 4.00
Posted on 2010-04-02 by Ady TZIDON (Solution Posted, 3 Comments)
Posted on 2010-04-02 by Ady TZIDON (Solution Posted, 3 Comments)
Counting triplets (in Numbers) Rating: 4.00
Posted on 2010-03-31 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2010-03-31 by Ady TZIDON (Solution Posted, 8 Comments)
More than one way to skin a cat (in Sequences)
Posted on 2010-03-24 by Ady TZIDON (Solution Posted, 7 Comments)
Posted on 2010-03-24 by Ady TZIDON (Solution Posted, 7 Comments)
Gambler's triangulation (in Probability) Rating: 3.50
Posted on 2010-03-18 by Ady TZIDON (Solution Posted, 9 Comments)
Posted on 2010-03-18 by Ady TZIDON (Solution Posted, 9 Comments)
45 4218 68 *559 4218 (in Numbers) Rating: 4.00
Posted on 2010-03-16 by Ady TZIDON (Solution Posted, 4 Comments)
Posted on 2010-03-16 by Ady TZIDON (Solution Posted, 4 Comments)
In Harmony with averages (in Numbers) Rating: 3.00
Posted on 2010-03-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Posted on 2010-03-12 by Ady TZIDON (No Solution Yet, 2 Comments)
Little cubes (in Numbers) Rating: 4.00
Posted on 2010-02-27 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2010-02-27 by Ady TZIDON (Solution Posted, 5 Comments)
Polish your French (in Word Problems)
Posted on 2010-02-22 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2010-02-22 by Ady TZIDON (Solution Posted, 6 Comments)
The three sides and the height (in Numbers)
Posted on 2010-02-15 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2010-02-15 by Ady TZIDON (Solution Posted, 5 Comments)
Si fueris Romae (in Numbers) Rating: 3.60
Posted on 2010-02-12 by Ady TZIDON (Solution Posted, 5 Comments)
Posted on 2010-02-12 by Ady TZIDON (Solution Posted, 5 Comments)
A streetcar named Enigma (in Numbers) Rating: 4.67
Posted on 2010-02-10 by Ady TZIDON (Solution Posted, 11 Comments)
Posted on 2010-02-10 by Ady TZIDON (Solution Posted, 11 Comments)
Hotter and hotter (in Numbers) Rating: 2.33
Posted on 2010-02-08 by Ady TZIDON (Solution Posted, 11 Comments)
Posted on 2010-02-08 by Ady TZIDON (Solution Posted, 11 Comments)
Lucky seven (in Numbers) Rating: 4.00
Posted on 2010-02-05 by Ady TZIDON (Solution Posted, 6 Comments)
Posted on 2010-02-05 by Ady TZIDON (Solution Posted, 6 Comments)
My travel IN SOME ORDER (in Numbers) Rating: 4.00
Posted on 2010-02-01 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2010-02-01 by Ady TZIDON (Solution Posted, 2 Comments)
four or more (in Numbers) Rating: 4.00
Posted on 2010-01-25 by Ady TZIDON (Solution Posted, 2 Comments)
Posted on 2010-01-25 by Ady TZIDON (Solution Posted, 2 Comments)
BIG , BIGGER , BIGGEST (in Numbers) Rating: 3.00
Posted on 2004-08-12 by Ady TZIDON (Solution Posted, 8 Comments)
Posted on 2004-08-12 by Ady TZIDON (Solution Posted, 8 Comments)
A square (in Numbers) Rating: 3.14
Posted on 2004-06-25 by Ady TZIDON (Solution Posted, 15 Comments)
Posted on 2004-06-25 by Ady TZIDON (Solution Posted, 15 Comments)
my house's number (in Numbers) Rating: 4.50
Posted on 2004-06-21 by Ady TZIDON (Solution Posted, 32 Comments)
Posted on 2004-06-21 by Ady TZIDON (Solution Posted, 32 Comments)
The odds stay unchanged (in Just Math) Rating: 4.27
Posted on 2004-06-17 by Ady TZIDON (Solution Posted, 21 Comments)
Posted on 2004-06-17 by Ady TZIDON (Solution Posted, 21 Comments)
Easy does it (in Numbers) Rating: 5.00
Posted on 2016-03-26 by Ady TZIDON (No Solution Yet, 3 Comments)
Posted on 2016-03-26 by Ady TZIDON (No Solution Yet, 3 Comments)