When this math problem was initially posted on Facebook, it included the claim that only one in 1,000 people could solve it. Will you be one of the lucky ones?
Here's the Puzzle
Can You Solve This Viral Math Puzzle?
Get an explanation of the solution.
Denise's Birthday Brainteaser
This one came from the National Institute of Education in Singapore.
Find the Heavy Ball
One of the eight balls is slightly heavier than the rest. How do you find it?
Written by Curiosity Staff September 12, 2016
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