Probability Practice Test 2

Question : 21 of 37

Marks: +1, -0

An integer is selected at random from 1 to 100. What is the probability that it will be a multiple of either 3 or 5?

Solution:

P(E) = P(multiples of 3) + P(multiples of 5) - P(multiples of 15)
= 33 + 20 - 6 = 47
So, required probability

=47/100

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