Posted by Sara on Wednesday, March 10, 2010 at 1:25pm.
Find the probability of tossing exactly 2 heads on 3 tosses of a fair coin.

Math  Reiny, Wednesday, March 10, 2010 at 1:33pm
HHH,HHT,HTH,THH,TTH,THT,HTT,TTT 8 ways
3 have 2 heads
prob(2 out of 3 H) = 3/8
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