Khan/khan-exercises — Issue #7074: Counting 2 - Counting 2
Author: KhanBugz
Created: 2011-11-25 21:38:52+00:00
State: open
Labels: chrome, hard, snowleo

Reporter: mattsteel101@gmail.com

This seems like a reasonably difficult problem yet no lesson has been given prior to arriving here. We have come from reading a clock face into this rather more difficult problem - doesn't seem to be a logical flow from one to the other. It seems obvious when the answer is presented but it does not feel like the teaching so far lead to this point, it seems too advanced for this early stage. Also, there is no video to accompany this type of problem. Thanks.

[counting_2.html?seed=182&problem=handshakes](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=182&problem=handshakes&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=182&problem=handshakes&debug&activity=%5B%5B%22hint-activity%22%2C%220%22%2C8%5D%2C%5B%22hint-activity%22%2C%220%22%2C82%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22156%5C%22%22%2C94%5D%2C%5B%22hint-activity%22%2C%220%22%2C9%5D%2C%5B%22hint-activity%22%2C%220%22%2C86%5D%5D)

["156"]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_5) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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