JEE Main & Advanced Mathematics Probability Question Bank Definition of probability

  • question_answer
    Two dice are tossed. The probability that the total score is a prime number is                                              [CEE 1993]

    A)                 \[\frac{1}{6}\]       

    B)                 \[\frac{5}{12}\]

    C)                 \[\frac{1}{2}\]       

    D)                 None of these

    Correct Answer: B

    Solution :

               Prime numbers are \[\{2,\,3,\,5,\,7,\,11\}.\]            Hence required probability                                 \[=\frac{1+2+4+6+2}{36}=\frac{15}{36}=\frac{5}{12}.\]


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