Question

In a game, the entry fee is ₹ 150. The game consists of tossing a coin 3 times. Dhana bought a ticket for entry. If one or two heads show, she gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise, she will lose. Find the probability that she loses the entry fee

Answer 1

Sample space (S) = {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}

n(S) = 8

To loss the entry means not getting the head ...(only tail)

n(C) = 1

P(C) = `("n"("C"))/("n"("S"))`

= `1/8`