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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    A die is rolled 100 times and the data is recorded as given in the table.
    Outcomes 1 2 3 4 5 6
    Frequency 22 13 20 10 25 10
    Which of the following is the probability of getting an odd number in a trial?

    A)  \[\frac{11}{50}\]                                             

    B)         \[\frac{1}{5}\]                  

    C)         \[\frac{67}{100}\]                                           

    D)         \[\frac{1}{4}\]

    Correct Answer: C

    Solution :

    In 100 trials, total number of odd numbers is 22 + 20 + 25 = 67 \[P(an\,odd\,no.)=\frac{67}{100}\]


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