A coin is tossed seven times. What is the probability that there is at the least one tail?  Choose the correct choice from the following choices.
A) 127/128 B) 31/37 C) 31/18 D) 31/10 E) 31/19
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?