Coin can be tossed until a tail appears or until it has been tossed 3 times. Given that tail does not occur on the first toss, whats probability that the coin is tossed 3 times?

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22-11-2016
Mathematics

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Coin can be tossed until a tail appears or until it has been tossed 3 times. Given that tail does not occur on the first toss, whats probability that the coin is tossed 3 times?

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Аноним Аноним · Answer 1 · 2016-11-25T02:16:49+01:00

For the coin to be tossed three times given the first toss is not a tail, the second toss must not be a tail. Since the probability of not getting a tail is 1/2. Therefore, the probability that the coin is tossed three times is 1/2.

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