Khan/khan-exercises — Issue #13564: Counting 2 - Wrong answers
Author: KhanBugz
Created: 2012-02-10 16:30:31+00:00
State: open
Labels: firefox, wrong-or-unclear

This entire sequence has the wrong logic. It should be the arithmetic series. The first person shakes 6 hands, the second shakes 5 new hands, etc.

[counting_2.html?seed=23&problem=handshakes](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=23&problem=handshakes&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=23&problem=handshakes&debug&activity=%5B%5B%22correct-activity%22%2C%22%5C%2221%5C%22%22%2C7%5D%5D)

["21"]

Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20100101 Firefox/10.0

MathJax is loaded, ready, queue length: 0

You should enable font download in your browser to improve the appearance of math expressions.