Question
5 coins are tossed together. What is the probability of
getting exactly 3 tails?Solution
If ‘n’ fair coins are tossed, Total number of outcomes in the sample space = 2n The probability of getting exactly ‘r’ number of heads when ‘n’ coins are tossed = nCr/ 2n Therefore, probability = 5C3/25 = 5/16
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