# Math Puzzles

## The Spider and the Fly

Are you a good puzzle solver? Check out this brain teaser! Inside a rectangular room, measuring 30 feet in length and 12 feet in width and height, a spider is at a point on the middle of one of the end walls, 1 foot from the ceiling, as at A; and a fly is on …

## Mathematical Brain Teaser #4

Can you help a prince and a princess find each other? If you know math, this should be easy. A princess inhabits a flight of 17 rooms in a row. Each room has a door to the outside, and there is a door between adjacent rooms. The princess spends each day in a room that …

## Mathematical Brain Teaser #3

If you didn’t focus on mathematics today, you should at least keep the gears in motion by trying to solve this mathematical puzzle. You are blindfolded, then given a deck of cards in which 23 of the cards have been flipped up, then inserted into the deck randomly (you know this). Without taking the blindfold …

## 3 Hard Mathematical Riddles

Are you a good problem solver? Try to figure out what’s behind these riddles and write your answer in the comments section. 1. A group of prisoners are trapped in a forcefield. These prisoners are perfectly brave, meaning that they would attempt an escape on any positive probability of success. The prisoners are monitored by …

## Mathematical Brain Teaser #2

Are you ready for a new brain teaser? This time, you have to help a bunch of prisoners. 1000 prisoners are in jail. There’s a room with 1000 lockers, one for each prisoner. A jailer writes the name of each prisoner on a piece of paper and puts one in each locker (randomly, and not …

## Mathematical Brain Teaser #1

Can you figure out which color hat you’re wearing? If you’re confused, check out this fun math game/puzzle. You and infinitely many other people are wearing hats. Each hat is either red or blue. Every person can see every other person’s hat color, but cannot see his/her own hat color; aside from that, you cannot …

## Einstein’s Puzzle

This is the kid friendly version of Einstein’s puzzle. It is claimed that only 2% of the world population can solve the puzzle! (and Einstein supposedly invented the original puzzle, though I have my doubts). Suppose there are five houses of different colors next to each other on the same street. There are also five …

## Problem From Heck

This is a weekly “Problem From Heck” that has driven several high school teachers crazy. Try if you dare! Thanks to Gregory Tewksbury-Calculus Humor for this submission! Source: http://calculushumor.weebly.com/3/post/2012/05/problem-from-heck-5.html

## Solution to the triangle puzzle

Source: http://redd.it/u192a

## Lend me five dollars

Easiest way to make money yet! Source: Futility Closet