New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A bag contains 15 black balls, 25 white balls, and 20

    yellow balls. If three balls are drawn at random with replacement, what is the probability of drawing a white ball first, a black ball second, and a yellow ball third?
    A 3/112 Correct Answer Incorrect Answer
    B 2/125 Correct Answer Incorrect Answer
    C 4/130 Correct Answer Incorrect Answer
    D 7/124 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Since, the ball is replaced each time
    Therefore, required probability = (25/60) × (15/60) × (20/60) = 5/144

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