GeeksforGeeks » Multiple Choice Questions

probability

(3 posts)

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  1. Sreemoyee
    guest
    Posted 2 years ago #

    What is the probability that divisor of 10^99 is a multiple of 10^96?
    (A) 1/625 (B) 4/625 (C) 12/625 (D) 16/625

  2. Gautham
    Member
    Posted 2 years ago #

    Number of divisors of 10^99 is 10000.
    10^99 = 5^99 * 2^99. So number of divisors = 100 * 100

    10^99 = 10^96 * 1000.
    Number of divisors of 1000 = 4 * 4 = 16

    So probability = 16/10000 = 1/625.

    Please let me know if I'm wrong somewhere..

  3. Madhvi panwar
    guest
    Posted 1 year ago #

    Three six faced fair dice are thrown together. The probability that sum of the no. appearing on the dice is k(3<x<8) is ?


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