Question

A fair coin is tossed three times in succession. The set of equally likely outcomes is StartSet HHH, HHT, HTH, THH, HTT, THT, TTH, TTT EndSet. Find the probability of getting exactly zero tails.

Answer 1

Exactly zero tails means all three tosses are heads (HHH). There's 1 favorable outcome out of 8 equally likely, so the probability is 1/8 = 0.125 = 12.5%.