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Difficulty: 3 of 5 Latest: Partridge Pandigital Set (in Numbers)
Find the smallest set of distinct whole numbers that contains one 1, two 2s, three 3s, ..., nine 9s

Smallest refers to the sum of the numbers in the set.

(No Solution Yet, 1 Comments) Submitted on 2009-07-05 by Jer   
Difficulty: 3 of 5 Bonus: Formula None Racer (in Just Math) Rating: 2.60
A car is travelling at a uniform speed.
The driver sees a milestone showing a 2-digit number. After travelling for an hour the driver sees another milestone with the same digits in reverse order. After another hour the driver sees another milestone containing the same two digits as in the first one but the two digits separated by a zero(0).

What is the speed of the car?

(Solution Posted, 35 Comments) Submitted on 2003-10-03 by Ravi Raja   
Difficulty: 3 of 5Going Cyclic With Geometric II (in Numbers)
Posted on 2009-07-04 by K Sengupta (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Digits 1 to B (in Just Math) Rating: 2.00
Posted on 2009-07-03 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 1 of 5An empty problem (in Riddles) Rating: 1.00
Posted on 2009-07-02 by Daniel (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Fly on a cone (in Just Math)
Posted on 2009-07-01 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 53/9, 12/9 and 1/2 (in Numbers)
Posted on 2009-06-30 by Dej Mar (No Solution Yet, 1 Comments)
Difficulty: 2 of 5How much time will you spend? (in Tricks)
Posted on 2009-06-29 by pcbouhid (Solution Posted, 3 Comments)
Difficulty: 2 of 5Eight-Digit Numbers In Reverse (in Just Math) Rating: 2.50
Posted on 2009-06-28 by K Sengupta (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Pandigital Processed Primes (in Numbers)
Posted on 2009-06-27 by Charlie (Solution Posted, 1 Comments)
Difficulty: 2 of 5Terminating in seven sevens (in Numbers)
Posted on 2009-06-26 by K Sengupta (No Solution Yet, 2 Comments)
Difficulty: 3 of 53x3 Nim (in Games) Rating: 4.20
Posted on 2009-06-25 by Jer (Solution Posted, 24 Comments)
Difficulty: 2 of 5Subtract 1, get a square (in Just Math)
Posted on 2009-06-24 by K Sengupta (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Bounded Sine (in Shapes)
Posted on 2009-06-23 by Jer (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Multiply Sum and Sum of Squares (in Numbers)
Posted on 2009-06-22 by K Sengupta (No Solution Yet, 4 Comments)
Difficulty: 5 of 5Duality (in Cryptography)
Posted on 2009-06-21 by brianjn (No Solution Yet, 2 Comments)

Recently Posted Solutions:
Difficulty: 2 of 5How much time will you spend? (in Tricks)
Submitted By pcbouhid. Solution posted on 2009-07-05 16:58:15
Difficulty: 3 of 5Pandigital Processed Primes (in Numbers)
Submitted By Charlie. Solution posted on 2009-07-04 12:05:00
Difficulty: 2 of 5Fly on a cone (in Just Math)
Submitted By Bractals. Solution posted on 2009-07-01 17:39:14
Difficulty: 3 of 53x3 Nim (in Games)
Submitted By Jer. Solution posted on 2009-07-01 11:40:30
Difficulty: 2 of 5Pair formed Sequence (in Sequences)
Submitted By Jer. Solution posted on 2009-06-23 00:06:30
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