• Puzzle:  What fraction is shaded?

    Puzzle: What fraction is shaded?0

    There’s nothing like a great geometry puzzle to get the Internet into a frenzy.  Ed Southall, author of “Geometry Snacks,” shared a photo of a pink triangle inside of a square and challenged people to figure out how much of the square is shaded pink. Here’s the puzzle: What fraction is shaded? The Solution: According

  • The Bat and A Ball Problem

    The Bat and A Ball Problem72

    If a baseball and a bat cost $1.10 together, and the bat costs $1.00 more than the ball, how much does the ball cost? Was your answer that the ball cost 10 cents? If so, you’d be wrong. Here’s the solution: Although $1.00 + $0.10 does equal $1.10,  if you take $1.00 – $0.10 you

  • The 3 Switches Puzzle (and solution)

    The 3 Switches Puzzle (and solution)0

    Can you solve the “3 Switches” puzzle? You are in the basement of a house where there are are three identical on-off switches.  One of them controls a lamp in the attic, and two of them do nothing.  You have no way to see into the attic or to see reflected light from the attic.

  • The Jewelry Box and the Ring [a riddle/puzzle]

    The Jewelry Box and the Ring [a riddle/puzzle]0

    Can you figure out this brain teaser? At an auction, a woman’s ring and a jewelry box with a hand-painted ceramic top are on sale for $200.   The jewelry box is valued at $190 more than the ring.  How much is the ring worth?   Scroll down for the answer…        

  • The “Infinite Profit” Puzzle

    The “Infinite Profit” Puzzle0

    Let’s say I put $20 in a box. Now you do the same. The box now contains $40, and we’re both aware of this fact. Now, I sell you the box for $30. We both walk away with $10 profit. Repeat forever, and you’ve got an infinite supply of money. Wait, wut? At first glance,

  • The Hidden Tiger Puzzle

    The Hidden Tiger Puzzle3

    The Hidden Tiger Puzzle… This optical illusion was created by American wildlife artist Rusty Rust. It shows a majestic Bengal Tiger standing in a bamboo forest.  Your mission, should you choose to accept it, is to find “the hidden tiger” in the image below. Source: http://puzzles4you.blogspot.ca/2011/07/hidden-tiger-puzzle.html


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