## Puzzle: What fraction is shaded?

There’s nothing like a great geometry puzzle to get the Internet into a frenzy. Ed Southall, author of “Geometry Snacks,”…

November 1, 2018
## Puzzle: What fraction is shaded?

There’s nothing like a great geometry puzzle to get the Internet into a frenzy. Ed Southall, author of “Geometry Snacks,”…

October 24, 2018
## The Bat and A Ball Problem

If a baseball and a bat cost $1.10 together, and the bat costs $1.00 more than the ball, how much…

October 7, 2018
## The 3 Switches Puzzle (and solution)

Can you solve the “3 Switches” puzzle? You are in the basement of a house where there are are three…

October 4, 2018
## A Simple Math Puzzle

Enter your answer in the comments. Don’t forget to show your work for full points… [colorvote id=”1″ style=”wpcvp-poll”]

September 30, 2018
## The Jewelry Box and the Ring [a riddle/puzzle]

Can you figure out this brain teaser? At an auction, a woman’s ring and a jewelry box with a hand-painted…

September 12, 2018
## The Hidden Tiger Puzzle

The Hidden Tiger Puzzle… This optical illusion was created by American wildlife artist Rusty Rust. It shows a majestic Bengal…

September 12, 2018
## The “Infinite Profit” Puzzle

Let’s say I put $20 in a box. Now you do the same. The box now contains $40, and we’re…

August 29, 2018
## Einstein’s Riddle: Are you part of the 2% that can solve it?

It is said Albert Einstein created a puzzle when he was only a child and it was so difficult that…

August 27, 2018
## 8 Marbles and a Balance Scale Puzzle

PUZZLE Let’s say you have 8 marbles and a two-pan balance. All of the marbles look the same. Each marble…

August 27, 2018
## The fruit puzzle: what’s going on and why can’t we agree on a solution?

Another seemingly straight-forward (children’s) math problem is making the rounds on the Internet. This time, it features fruit: apples, bananas,…