11. A number is selected from numbers 1 to 25. The probability that it is prime is (a)2/3 (b)1/6 (c)1/3 (d)5/6

Question

11. A number is selected from numbers 1 to 25. The probability that it is prime is

(a)2/3
(b)1/6
(c)1/3
(d)5/6

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Elliana 1 month 2021-08-20T10:41:50+00:00 1 Answer 0 views 0

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    2021-08-20T10:42:51+00:00

    Answer:

    Let S be the set of numbers from 1 to 25.

    n(S)=25

    Let A be the set of prime numbers from 1 to 25

    A={2, 3, 5, 7, 11, 13, 17, 19, 23}

    P(A)=n(A)/n(S)

    =9/25

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