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10th Class Mathematics Probability Question Bank Case Based (MCQs) - Probability

  • question_answer
    Sunny buys 4 cartons of pineapple juice, 3 cartons of Litchi juice and 3 cartons of banana juice. A customer comes to Sunny's shop and picks a tetrapack of juice at random. The probability that the customer picks a banana juice, if each carton has 10 tetrapacks of juice, is:

    A) \[\frac{1}{10}\]

    B) \[\frac{2}{10}\]

    C) \[\frac{3}{10}\]

    D) \[\frac{2}{5}\]

    Correct Answer: C

    Solution :

    [c] Total number of cartons sunny bought \[=4+3+3=10\]
    Number of tetrapacks in 1 carton = 10
    \[\therefore \] Total number of tetrapacks Sunny has =100
    So, P(customer picks a banana juice tetrapack)
    \[=\frac{3\times 10}{100}=\frac{3}{10}\]
    So, Option [c] is correct.


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