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Nick's Mathematical Puzzles: 1 to 10. 1.

Nick's Mathematical Puzzles: 1 to 10

Folded sheet of paper A rectangular sheet of paper is folded so that two diagonally opposite corners come together. If the crease formed is the same length as the longer side of the sheet, what is the ratio of the longer side of the sheet to the shorter side? Undergraduate contest problems and solutions. MathCaching GeoCaching Box #1. Welcome to the "GeoCaching" version of MathCaching!

MathCaching GeoCaching Box #1

(This level is for Geometry students.) You are searching for 10 hidden internet boxes. A fun card puzzle. I came across a good brain teaser at this site: A pack of cards has 52 cards.

A fun card puzzle

You are in a dark room with this pack of cards. NUMB3RS Episode 504: Thirty-Six Hours--Wolfram Research Math Notes.