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प्रश्न
Three coins are tossed simultaneously. What is the probability of getting exactly two tails?
बेरीज
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उत्तर
Total number of outcomes
= (HHH), (HHT), (HTH), (THH), (TTH), (TTT), (THT), (HTT) = 8
Exactly two tails (HTT), (TTH), (THT)
n = 3
P = Exactly two tails = `3/8`
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