Pi Day Collection

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Dark gray socks with Pi symbol and 85 digits of Pi in white and green.
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85 Digits of Pi Sock
$ 12.95
A black sock with white chalkboard style numbers and equations with red toes, tops, and heels.
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Math Socks
$ 11.00
Adsumudi is a box set up in different sections with bold colors and mathematical shapes. The math monster mascot is at the top, holding an equals sign.
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Adsumudi
$ 17.99
A paperback book that is 10.9" x 8.8". The cover is beige with text down the front. There are squares and a circle on one side.
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Can You Solve My Problems?: Ingenious, Perplexing, and Totally Satisfying Math and Logic Puzzles by Alex Bellos
$ 15.95
A young Katherine Johnson sits on a chair in front of a moon image decorated with different mathematical formulas. The paperback book is blue, with yellow text, and is 11.3" x 9.4".
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Counting on Katherine: How Katherine Johnson Saved Apollo 13 by Helaine Becker, Illustrated by Dow Phumiruk
$ 18.99
"The Master Theorem" puzzle book is an oversized paperback with a dark blue cover with different mathematical and mysterious symbols in white.
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The Master Theorem - A Book of Puzzles, Intrigue and Wit by M.
$ 29.99