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प्रश्न
Three identical coins are tossed together. What is the probability of obtaining:
exactly two heads?
उत्तर
Total outcomes = 8
i.e. (H,H,H),(H,H,T),(H,T,H),(T,T,T),(T,H,H),(T,T,H),(H,T,T),(T,H,T)
Favourable outcome = 3 (H,H,T) , (H,T,H) , (T,H,H)
∴ P(E) = `3/8`
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