If a fair coin is tossed seven times, what is the probability of getting exactly five heads in a row?  Pick one
A) 1/8	B) 1/16	C) 3/32	D) 3/64	E) 5/128
Let X represent either H or T (it doesn't matter which).   P(HHHHHTX) = 1/64   P(THHHHHT) = 1/128   P(XTHHHHH) = 1/64   The sum of these probabilities is 5/128   The answer is 5/128.
<result>E</result>
If a fair coin is tossed seven times, what is the probability of getting exactly five heads in a row?