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    Question

    20 defective LED bulbs were mixed with 180 working LED

    bulbs. One bulb is selected randomly. What is the probability that the selected bulb is defective?
    A 1/10 Correct Answer Incorrect Answer
    B 2/15 Correct Answer Incorrect Answer
    C 1/9 Correct Answer Incorrect Answer
    D 3/20 Correct Answer Incorrect Answer

    Solution

    Number of defective LED bulbs = 20
    Total number of LED bulbs = 180 + 20 = 200
    Required probability = (20/200) = (1/10)

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