A coin is tossed seven times. What is the probability that there is at the least one tail?  Select the correct option:
A) 127/128
B) 31/138
C) 31/167
D) 31/117
E) 31/128
Let P(T) be the probability of getting least one tail when the coin is tossed seven times.   = There is not even a single tail.   i.e. all the outcomes are heads.   = 1/128 ; P(T) = 1 - 1/128   = 127/128   127/128nswer: 127/128
<result>A</result>
A coin is tossed seven times. What is the probability that there is at the least one tail?