J & K CET Engineering J and K - CET Engineering Solved Paper-2015

  • question_answer
    If there are 6 red and 30 white beads, then the probability of drawing red beads in 2 successive trials, with replacement, is

    A)  \[\frac{1}{18}\]

    B)  \[\frac{1}{6}\]

    C)  \[\frac{5}{216}\]

    D)  \[\frac{1}{36}\]

    Correct Answer: D

    Solution :

    Given, number of red beads = 6 Number of white beads = 30 Total number of beads \[=6+30=36\] Probability of drawing red beads in 2 successive trials \[=\frac{6}{36}\times \frac{6}{36}\] \[=\frac{1}{36}\] [ \[\because \] events are independent]


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