JEE Main & Advanced Mathematics Probability Question Bank Definition of probability

  • question_answer
    A six faced dice is so biased that it is twice as likely to show an even number as an odd number when thrown. It is thrown twice. The probability that the sum of two numbers thrown is even, is              [Kurukshetra CEE 1996]

    A)                 \[\frac{1}{12}\]    

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

    C)                 \[\frac{1}{3}\]       

    D)                 \[\frac{2}{3}\]

    Correct Answer: D

    Solution :

                    Trick : As we know, the sum will be either even or odd but even is more likely to occur than odd (given). Therefore, the probability is greater than \[\frac{1}{2}\] which is given in only one option.


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