Khan/khan-exercises — Issue #12255: Counting 2 - Counting 2
Author: KhanBugz
Created: 2012-01-27 04:01:52+00:00
State: open
Labels: firefox, other, vista

Reporter: perezoriola@optonline.net

Dear Sal and Friends,
I think the answer is 20 (5 people shaking the hands of the other 4 people) but it won't take. This is from a 54 yo woman seeking to fill in the gaps and "outdatedness" of her education. Gratefully yours, Monica Perez

[counting_2.html?seed=29&problem=handshakes](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=29&problem=handshakes&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=29&problem=handshakes&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.0; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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