All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars
 perplexus dot info
 Home Welcome to perplexus.info, flooble's perplexing puzzle portal. Here, we collect all sorts of puzzles, from simple logic questions and word tricks to in-depth math problems like probability and geometry. Click around and see if your brain is up to the task! If you're new here, make sure you sign up so that you can leave comments and submit your own problems!
Categories
 > Logic > Probability > Shapes > General (1) > Numbers (2) > Games > Paradoxes > Riddles > Just Math > Science > Algorithms
This sequence is not in OEIS (or should I say 0E15)

0, 0.5, 1, 3, 2, 3, 28.5, 6, 4.5, 5, 10, 11, 12, 7, 7, 8, ???

what rule generates this ZER0-based sequence, and what number is next?

 (No Solution Yet, 0 Comments) Submitted on 2020-09-29 by Larry
Bonus: Square pairs (in Just Math) Rating: 2.67
There are pairs of numbers whose sum and product are perfect squares. For instance, 5 + 20 = 25 and 5 x 20 = 100.

If the smallest number of such a pair is 1090, what is the smallest possible value of the other number? No computers!!

 (Solution Posted, 7 Comments) Submitted on 2005-06-15 by pcbouhid
Antonyms (in Word Problems)
Posted on 2020-09-28 by Charlie (No Solution Yet, 0 Comments)
A square pattern? (in Numbers)
Posted on 2020-09-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
What follows? (in Sequences)
A proverb (in Word Problems)
Previously divisible (in Numbers)
Posted on 2020-09-24 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Extreme inequality (in Just Math) Rating: 5.00
Posted on 2020-09-23 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Must be prime (in Sequences)
Last Letters (in Word Problems) Rating: 3.00
Posted on 2020-09-21 by Charlie (Solution Posted, 3 Comments)
No fractions (in Just Math)
Two slopes out of three (in Calculus) Rating: 5.00
Posted on 2020-09-18 by Jer (No Solution Yet, 1 Comments)
Tetrahedral angles (in Shapes)
Posted on 2020-09-17 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
hiDDen maMMals (in Word Problems)
An Iterated Floor Equation (in Numbers)
Posted on 2020-09-15 by Brian Smith (No Solution Yet, 3 Comments)
Close neighbor (in General) Rating: 1.00

Recently Posted Solutions:
Last Letters (in Word Problems)
Submitted By Charlie. Solution posted on 2020-09-23 11:33:50
S.S. Minnow SOS (in Probability)
Submitted By Charlie. Solution posted on 2020-09-09 06:49:20
Two Pill Bottles (in Probability)
Submitted By Charlie. Solution posted on 2020-08-22 09:58:57
What price glory? (in Just Math)
Submitted By Ady TZIDON. Solution posted on 2020-08-13 05:51:54
Numbered Balls in Test Tubes 2 (in Logic)
Submitted By Charlie. Solution posted on 2020-08-12 07:10:46

 Search: Search body:
Forums (1)