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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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Difficulty: 2 of 5 Latest: Enigma (in Logic)
My very eager mother just served us nine pizzas...


Why did she do it?

(No Solution Yet, 2 Comments) Submitted on 2017-12-11 by Ady TZIDON   
Difficulty: 2 of 5 Bonus: A Horse Tied To A Barn (in Shapes) Rating: 4.17
In a large and flat grass field, there is a 30x30 feet square barn facing due North. Straight from the NorthEast corner of the barn is a fence running due East 40 feet long. There is a horse tied on the SouthEast corner of the barn with a rope that will allow him to eat grass in any direction up to 100 feet. The horse can't eat under the barn, and the rope can't pass through the barn or through the fence. The horse can walk around the barn or the fence, but is limited by the length of the rope.

How many square feet of grass can the horse reach?

(I found this problem pretty interesting, but I am not the author and have no idea who is the author).

(Solution Posted, 10 Comments) Submitted on 2005-04-02 by Michael Cottle   
Difficulty: 4 of 5Verify and prove (in Sequences)
Posted on 2017-12-10 by Ady TZIDON (No Solution Yet, 5 Comments)
Difficulty: 4 of 5All, except two (in Sequences)
Posted on 2017-12-09 by Ady TZIDON (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Spelling bee results (in Just Math) Rating: 2.00
Posted on 2017-12-08 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 4 of 5A creative contest (in Word Problems)
Posted on 2017-12-07 by Ady TZIDON (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Three fours (in Numbers)
Posted on 2017-12-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Just name the date (in General)
Posted on 2017-12-05 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5No miracles (in Famous Riddles)
Posted on 2017-12-04 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Just 4 different digits (in Numbers)
Posted on 2017-12-03 by Ady TZIDON (No Solution Yet, 10 Comments)
Difficulty: 4 of 5One ninth of a pandigital (in Numbers)
Posted on 2017-12-02 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 4 of 5One triplet of digits (in Numbers) Rating: 3.50
Posted on 2017-12-01 by Ady TZIDON (No Solution Yet, 6 Comments)
Difficulty: 4 of 5Peace, no war (in General)
Posted on 2017-11-30 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5A square pairing (in Numbers)
Posted on 2017-11-29 by Ady TZIDON (Solution Posted, 1 Comments)
Difficulty: 3 of 5Dice stacking (in Games)
Posted on 2017-11-28 by TheKPAXian (No Solution Yet, 4 Comments)
Difficulty: 1 of 5Quickie XI (in Numbers)
Posted on 2017-11-27 by Ady TZIDON (Solution Posted, 2 Comments)

Recently Posted Solutions:
Difficulty: 3 of 5Nine nine-digits results (in Just Math)
Submitted By Ady TZIDON. Solution posted on 2017-12-06 03:32:43
Difficulty: 3 of 5What is .... ...... (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2017-12-03 00:46:31
Difficulty: 3 of 5Pythagorean areas (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2017-12-02 00:04:10
Difficulty: 3 of 5Ulam numbers II (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2017-12-01 23:52:52
Difficulty: 2 of 5A triple T question (in Famous Riddles)
Submitted By Ady TZIDON. Solution posted on 2017-12-01 23:45:02
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