JEE Main & Advanced Mathematics Probability Question Bank Definition of probability

  • question_answer
    A binary number is made up of 16 bits. The probability of an incorrect bit appearing is p and the errors in different bits are independent of one another. The probability of forming an incorrect number is                                     [AMU 1999]

    A)                 \[\frac{p}{16}\]    

    B)                 \[{{p}^{16}}\]

    C)                 \[{}^{16}{{C}_{1}}{{p}^{16}}\]

    D)                 \[1-{{(1-p)}^{16}}\]

    Correct Answer: D

    Solution :

               Probability of correct bit appearing is (1 ? p)            \ Probability of correct number \[={{(1-p)}^{16}}\]                 and hence probability of incorrect number \[=1-{{(1-p)}^{16}}\].


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