39. Find the probability of selecting a multiple of 2 or a
multiple of 7 from the integers 1-20.

The probability of selecting a multiple of 2 or a multiple of 7 is 11/20 or 0.55 or √0.3025.
It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.
Total number of outcome = 20
Total number of favourable outcome (multiple of 2 or a multiple of 7):
E = {2, 4, 6, 7, 8, 10, 12, 14, 16, 18, 20}
n(E) = 11
The probability = 11/20 = 0.55 or
= √0.3025
Thus, the probability of selecting a multiple of 2 or a multiple of 7 is 11/20 or 0.55 or √0.3025.
Learn more about the probability here:
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