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10 August, 11:37

If a certain coin is flipped, the probability that the coin will land heads up is / small / frac{1}{2}. If the coin is flipped 5 times, what is the probability that it will land heads up on the first 3 flips and not on the last 2 flips?

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  1. 10 August, 11:49
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    The probability of the heads up on the first three flips and not on the last two flips will be 1/32.

    Step-by-step explanation:

    As, the probability of head up when one time coin is flipped is 1/2. And it is said in the question that you must get heads in the first three flips.

    So, for the first three flips the probability is = (1/2) ^3 = 1/8

    And for the last two flips you want to get not heads up.

    Then, the probability is = (1/2) ^2 = 1/4

    Hence, your overall probability will be = 1/8 * 1/4 = 1/32.
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