Tag Archives: counting

Chessboard counting

Posted on March 13, 2009 by Brent

I am currently doing a unit on combinatorics (the mathematical study of counting) with my precalculus students, and I was inspired to post a few counting-themed challenge problems for your enjoyment. (Also, it’s my spring break!) As you probably know, … Continue reading →

Posted in challenges, counting | Tagged , , , , | 10 Comments

Carnival of Math #48, and Monday Math Madness #25

Posted on January 31, 2009 by Brent

The 48th Carnival of Mathematics is posted at Concrete Nonsense. My favorite posts include Foxmath’s post about a strange iterated sequence involving pi and this amazing picture of a fractal cabbage. Also near and dear to my heart is Mark … Continue reading →

Posted in challenges, counting, famous numbers, fractals, links | Tagged , , , , | 1 Comment

Challenge #12: sums of powers of two

Posted on April 18, 2008 by Brent

A few interesting problems for you to think about: Given a positive integer n, in how many ways can n be written as a sum of powers of two, when each power is allowed to occur at most once? For … Continue reading →

Posted in challenges, counting, pattern | Tagged , , , | 18 Comments