A contest that asks to write all integers from 1 to 100 using only the digits 2,0,0,1 and arithmetic operations.
A contest where the contestants have to write all integers from 1 to 100 using only the digits 2,0,0,2 and arithmetic operations.
Mathematics Hots (Problems) by Bruno Kevius
View this week's algebra problem or those of previous weeks.
A collection of card tricks, number guessing games, paper and glue magic, and other math exercises.
A page of uncommon problems, most closely connected with number theory.
Includes pages on the topics of primes, fibonacci numbers, PI computation, data encryption and links to calculator programs.
Numerous facts including formulas, magic tricks, fallacies, recreations compiled by Dr. Gerald P. Michon.
Home of Simon Singh: author, journalist and TV producer, specialising in science and mathematics. Cryptography is one of his specialties, and his site has a lot of educational and fun content about codes and codebreaking.
Designed and built by Andrew Lipson. Images and LDraw files.
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