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A number is chosen from the first 24 positive integers. Find the probability that:

a) the number is divisible by 3 given that it is divisible by 4
b) the number is divisible by 6 given that it is divisible by 3

Just need help with either one, thank you for your time.

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4 answers

  1. 12, 24

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  2. For future students who google this:
    A) 2/6 or 1/3
    B) 1/2

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  3. Q2. Numbers 1 - 24 that are divisible by 3: 3, 6, 9,12, 15,18, 21, 24
    Which of those are also divisible by 6?
    6, 12, 18, 24 So therefore 4/8 = 1/2 = Pr(d6Id3)

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  4. Numbers 1 - 24 that are divisible by 4: 4, 8, 12, 16, 20, 24

    Which of those are also divisible by 3?

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