Geography

Question

An integer is chosen at random from the first 40 positive integers. What is the probability that the integer chosen is divisible by 6 or 8?

1 Answer

  • Well let's see how many numbers can be divisible by 6 or 8, add them up, and then put it into a fraction.
    6: 6, 12, 18, 24, 30, 36.
    6: 8, 16, 24, 32, 40.
    Total: 
    6, 8, 12, 16, 18, 24, 30, 32, 36, 40.
    There are 10/40 positive numbers that can be divided by 6 or 8.
    Simplified, 1/4.
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