10th Class Mathematics Probability Question Bank MCQs - Probability

  • question_answer
    A girl calculates that the probability of her winning the first prize in a Lottery is\[0.0\text{8}\]. If 6000 tickets are sold, how many tickets has she bought?    (NCERT EXEMPLAR)

    A) 40

    B) 240

    C) 480

    D) 750

    Correct Answer: C

    Solution :

    [c] Given, total number of tickets sold \[=6000\]
    Let the girl bought x tickets.
    Then, probability of her winning the first prize
    \[=\frac{x}{6000}\]
    \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,0.08=\frac{x}{6000}\]
    \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x=0.08\times 6000=48\]


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