A coin is 3 times.what is the probability of getting atleast one head
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Probability of exactly one head from three tosses. Note that this is the same as summing the probability of the 3 mutually exclusive events htt, tht and tth each of which has probability 1/8 or in total 3 times that or 3/8. Given that we have at least one head the probability that there are at least 2 heads.
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Probability of getting atleast one head = 7/8
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