What is the probability of flipping a fair coin eight times and the coin landing on heads on at least two flips?
Select the correct option:
A) 61/64	B) 117/128	C) 123/128	D) 247/256	E) 253/256
The number of possible outcomes is 2^8=256.   0 heads: There is 1 way to have all tails.   1 head: There are 8 ways to have one head.   P(0 or 1 head)=9/256   P(at least 2 heads)=1 - 9/256 = 247/256   The answer is 247/256.
<result>D</result>
What is the probability of flipping a fair coin eight times and the coin landing on heads on at least two flips?