JEE Main & Advanced Mathematics Probability Question Bank Definition of probability

  • question_answer
    The chance of throwing a total of 7 or 12 with 2 dice,  is [Kurukshetra CEE 2002]

    A)                 \[\frac{2}{9}\]       

    B)                 \[\frac{5}{9}\]

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

    D)                 \[\frac{7}{36}\]

    Correct Answer: D

    Solution :

               Total number of outcomes \[=36\],             For sum = 7, favourable outcomes are 6 i.e.,            (6, 1); (5, 2); (4, 3); (3, 4); (2, 5); (1, 6)            For sum = 12, favourable outcome is only 1 i.e., (6, 6)                 \ Probability \[=\frac{6}{36}+\frac{1}{36}=\frac{7}{36}\].


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