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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    A bag contains 3 red balls, 5 black balls and 4 white balls. A ball is drawn at random from the bag. What is the probability of getting a black ball?

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

    B)        \[\frac{5}{12}\]                

    C)         \[\frac{7}{12}\]                               

    D)         1

    Correct Answer: B

    Solution :

    Total balls = 12 No. of black balls = 5 \[\therefore \]P (a black ball) \[=\frac{5}{12}\]


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