9th Class Mathematics Probability Question Bank Probability

  • question_answer
    Two dice are thrown simultaneously. The probability of getting a multiple of 2 on one die and a multiple of 3 on the other is ____.

    A) \[\frac{5}{36}\]                         

    B) \[\frac{5}{12}\]             

    C)  \[\frac{11}{36}\]                                  

    D)  \[\frac{1}{12}\]            

    Correct Answer: C

    Solution :

    Let S be the sample space of throwing two dice then,
    (1, 1), (1,2), (1,3), (1,4), (1,5), (1,6);
    (2,1), (2,2), (2,3), (2,4), (2,5), (2,6);
    S = (3, 1), (3,2), (3,3), (3,4), (3,5), (3,6);
    (4,1), (4,2), (4,3), (4,4), (4,5), (4,6);
    (5,1), (5,2), (5,3), (5,4), (5,5), (5,6);
    (6,1), (6,2), (6,3), (6,4), (6,5), (6,6)
     Total number of outcomes = 36 Number of favorable outcomes = {(2, 3), (2, 6), (3, 2), (3, 4), (3, 6), (4, 3), (4, 6), (6, 2), (6, 3), (6, 4), (6, 6)} i.e., 11 in number  Required probability


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