Welcome to the 252nd Carnival of Mathematics! This post brings together submissions and other posts from the mathy web. Thanks all for participating.Let's start with the number: 252Divisors: 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252Prime factorization: 252 = 2² × 3² × 736 weeks = 252 daysFrom Wikipedia 252 is:a practical numbera refactorable numbera hexagonal pyramidal number in the Mian-Chowla sequencethe number of points on the surface of a cuboctahedron of radius five in the face-centered cubic lattice"252 is the standard assumption for number of trading days per year. 52 weeks*5 days/week, minus a few holidays." - Aaron Soley"There are 252 unique ways of selecting 4 different squares from a 4x4 square grid equivalent under rotations and reflections." - FoldsterThere are 252 ways to choose 5 from 10 (play here):Pages and PostsVisually Beautiful & Creative MathTurtles and polynomials — Math is a Creative Space dives into math with beautiful animations and…
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