Khan/khan-exercises — Issue #14923: Counting 2 - How Many Handshakes Occurred
Author: KhanBugz
Created: 2012-02-29 05:21:00+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: justinnoah@gmail.com

If everyone shakes everyone else's hand exactly once and the question is then 'How many handshakes occurred?' The answer would not be 9. Many more than nine would take place. Maybe a rewording of the question is needed here, but I understand this as having a LOT more handshakes than just nine.

[counting_2.html?seed=2&problem=handshakes](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=2&problem=handshakes&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=2&problem=handshakes&debug&activity=%5B%5B%22hint-activity%22%2C%220%22%2C154%5D%5D)

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Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0a2) Gecko/20120228 Firefox/12.0a2

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