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प्रश्न
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
उत्तर
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`
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