Three coins are tossed. Find the probability of at most 2 tails ?	Choose the correct choice from the following answers.
A) 1/2  B) 1/4  C) 2/3  D) 7/8  E) 3/8
n(s) = 2^3 = 8   let E is the event of getting at most 2 tails   n(E) = HHH, TTH , HTT, THT, HHT, HTH, THH = 7   P(E) = n(E) / n(s)   = 7/8   Ans- 7/8
<result>D</result>
Three coins are tossed. Find the probability of at most 2 tails ?