Question

A coin is tossed thrice find the event in which only head appears.

Answer 1

only 1/9 is the probability to have all heads

Answer 2

no. of times head can arrive = 3

no. if times the dice is thrown = 3

therefore head 3 times and tails 3 times may arrive

hence, total no. of observations = 3+3 = 6

so, probability of getting a head = 3/6 = 1/2