Suppose you flip a fair coin four times. What is the probability that, in four flips, you get at least one head?	Options
A) 13/16
B) 7/16
C) 15/16
D) 21/16
E) 19/16
Best way of solving an at least 1 type of question is to compute 1 - probability of flipping 0 heads   probability of flipping either a head or a tail = 1/2   probability of flipping 3 tails in a row (1/2)^4   probability of flipping at least 1 head = 1 - (1/2)^4 = 15/16   Answer : 15/16
<result>C</result>
Suppose you flip a fair coin four times. What is the probability that, in four flips, you get at least one head?