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10th Class Mathematics Probability Question Bank MCQs - Probability

  • question_answer
    A bag contains 4 red, 5 black and 3 yellow balls. A ball is taken out of the bag random. Find the probability that the ball taken out is not of red colour.

    A) \[\frac{2}{3}\]

    B) \[\frac{1}{3}\]

    C) \[\frac{1}{4}\]

    D) \[\frac{1}{2}\]

    Correct Answer: A

    Solution :

    [a] Number of favourable outcomes
    \[=5(black)+3(yellow)=8\]
    Number of all possible outcomes
    \[=4(red)+5(black)+3(yellow)=12.\]


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