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5 January, 16:02

A box contains 22 widgets 4 of which are defective. If 4 are sold at random find the probability that a all are defective b none are defective

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  1. 5 January, 17:14
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    Probability that all 4 are defective is

    0.181818181 and the probability that none of them us defective is 0.818181818

    Step-by-step explanation:

    The question Here says that A box contains 22 widgets 4 of which are defective. If 4 are sold at random find the probability that a all are defective b none are defective

    The probability of all 4 widgets sold being defective is 4/22 = 0.181818181

    And the probability of all 4 being effective will be

    1 - (4/22)

    = 9/11 or 0.818181818
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