Question

a pair of coins is tossed a fixed number of times if the probability of getting both heads exactly 3 times is same as the probability of getting both heads exactly 4times then the no of trials is​

Answer 1

Answer:

The number of outcomes = HH    TT    HT    TH

                                            = 4

Probability of getting

both heads 3 times     = 1 / 3

Probability of getting

both heads 4 times     = 1 / 4

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