10th Class Mathematics Probability Question Bank Probability

  • question_answer
    250 tickets are sold for a raffle. A girl calculates that the tickets bought by her family give them a 0.032 probability of winning first prize. How many tickets did the family buy?

    A)  60                                         

    B)  9   

    C)  50                         

    D)         8

    Correct Answer: D

    Solution :

     \[0.032=\frac{n(A)}{250}\] \[n(A)=\text{25}0\times 0.0\text{32}\] \[n(A)=8\]


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