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Georg Cantor was a mathematician who invented the branch of math known as set theory. He lived from 1845 to 1918. Try this fun logic puzzle about time traveling to meet Cantor. Professor Henderton from University College is obsessed with set theory and Georg Cantor. Ever since Henderton wrote his dissertation on Cantor’s theory of … Continue Reading

Try this fun puzzle and learn about the Collatz conjecture. Zara Zeld, a math Professor at the University of Sikinia, was trying to understand why it seemed like you could pick any positive integer, do some simple math and always end at the number 1. The simple math was this: If the number is odd, … Continue Reading

Challenge yourself and your friends with this fun number puzzle. Martin Gardner was one of the most important American puzzlers and popular science writers ever. He lived from 1914-2010, and wrote thousands of fascinating puzzles in his lifetime, as well as writing a deeply important popular science column weekly for 25 years. Some of the … Continue Reading

Try this puzzle! Alexa, Barney, Cara, Dylan, Ethan, and Frances are all planning to compete in the Kangaroo Math Contest, and each week they write Kangaroo Math sample questions and answers for each other so they can practice. Each kid writes one problem for exactly one other kid, and each kid receives one problem from … Continue Reading