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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!
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> Just Math (1)> Science> Algorithms
Difficulty: 3 of 5 Latest: Outcoming (in Geometry)
AD and AE are respectively the altitude and angle bisector of ΔABC (D and E are on side BC). If DB - DC = 1029 and EB - EC = 189 then what is the value of AB - AC?
(No Solution Yet, 0 Comments) Submitted on 2019-02-17 by Danish Ahmed Khan   
Given f(x)= 19/(19+19x)

determine if f(1/200000)+f(2/200000)+...+f(99999/200000) equals
f(100001/200000)+f(100002/200000)+...+f(199999/200000)
(Solution Posted, 3 Comments) Submitted on 2006-09-03 by K Sengupta   
Difficulty: 3 of 5Algebra? (in Just Math)
Posted on 2019-02-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5I squeeze, squeeze, and squeeze (in Geometry)
Posted on 2019-02-15 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 2 of 55 given, 3 to find (in Sequences)
Posted on 2019-02-15 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Davay! (in Sequences)
Posted on 2019-02-14 by Ady TZIDON (Solution Posted, 4 Comments)
Difficulty: 1 of 5Quick Divisiblity Proof (in Numbers)
Posted on 2019-02-14 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Recovering the number (in Numbers)
Posted on 2019-02-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5The Cut Cube (in Shapes)
Posted on 2019-02-13 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Triangle area / perimeter (in Just Math)
Posted on 2019-02-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 1 of 5Walking and Running (in General)
Posted on 2019-02-12 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Insert 2 missing numbers (in Sequences)
Posted on 2019-02-11 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 1 of 5600 sixes (in Numbers)
Posted on 2019-02-11 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Does It Continue? 11 (in Just Math) Rating: 5.00
Posted on 2019-02-10 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 4 of 5Get a stonefish! (in Numbers)
Posted on 2019-02-09 by Ady TZIDON (Solution Posted, 1 Comments)
Difficulty: 4 of 5Equal Circles (in Geometry)
Posted on 2019-02-08 by Danish Ahmed Khan (No Solution Yet, 1 Comments)

Recently Posted Solutions:
Difficulty: 3 of 5Davay! (in Sequences)
Submitted By Ady TZIDON. Solution posted on 2019-02-17 07:24:01
Difficulty: 3 of 5She missed an operator (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2019-02-11 04:23:50
Difficulty: 4 of 5Get a stonefish! (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2019-02-11 04:08:08
Difficulty: 2 of 5Oscar Wilde Said (in Word Problems)
Submitted By Charlie. Solution posted on 2019-02-10 22:43:19
Difficulty: 3 of 5Can you C it? (in Word Problems)
Submitted By Kenny M. Solution posted on 2019-02-10 08:53:31
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