Khan/khan-exercises — Issue #6352: Probability 1 - probability 1
Author: KhanBugz
Created: 2011-11-15 04:01:50+00:00
State: open
Labels: hard, ie8, ie9, vista

Reporter: tianlong1314@gmail.com

i don't know how to do it. it is too hard for me.

[probability_1.html?seed=78&problem=3](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/probability_1.html?seed=78&problem=3&debug)

["7/10","1/2","1/2"]

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