What is the probability of getting exactly 2 heads in a single throw of four fair coins?	Choose the correct choice from the following choices
A) 1/2
B) 3/4
C) 3/8
D) 3/16
E) 5/16
One possible case is HHTT.   P(HHTT) = 1/2*1/2*1/2*1/2 = 1/16   There are 4C2 = 6 possible cases.   P(2 heads) = 6*1/16 = 3/8   The answer is 3/8.
<result>C</result>
What is the probability of getting exactly 2 heads in a single throw of four fair coins?