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    Question

    21 defective pendrives got mixed with 189 non-defective

    pendrives. One pendrive is selected at random. Find the probability that the selected pendrive is defective.
    A 1/10 Correct Answer Incorrect Answer
    B 1/9 Correct Answer Incorrect Answer
    C 2/15 Correct Answer Incorrect Answer
    D 7/63 Correct Answer Incorrect Answer

    Solution

    Number of defective pendrives = 21
    Total number of pendrives = 189 + 21 = 210
    Required probability = (21/210) = (1/10)

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