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    Question

    30 defective earphones got mixed with 150 non-defective

    earphones. A student randomly picks one earphone. Find the probability that it is defective.
    A 1/6 Correct Answer Incorrect Answer
    B 1/5 Correct Answer Incorrect Answer
    C 2/11 Correct Answer Incorrect Answer
    D 3/14 Correct Answer Incorrect Answer

    Solution

    Number of defective earphones = 30
    Total number of earphones = 150 + 30 = 180
    Required probability = (30/180) = (1/6)

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