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A number from 1 to 100, inclusive, is selected at random. What is the probability that the

number selected-

a. is a prime number?

b. contains the digit 9?

c. is both prime and contains the digit 9?

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Answers (2)
  1. 23 July, 03:48
    0
    A : 1/4

    B : 19/100

    C : 3/50

    Step-by-step explanation:

    There are 25 prime numbers from 1 to 100.

    2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97.

    25/100 = 1/4

    There are 19 numbers that contain 9.

    9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, and 99.

    19/100

    There are 6 numbers that are prime and contain 9.

    19, 29, 59, 79, 89, 97.

    6/100 = 3/50
  2. 23 July, 04:02
    0
    Answer:i might be wrong but i believe its b
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