The probability that a number selected at random from the first 50 natural numbers is a composite number is?  Pick:	A) 11/15	B) 13/15	C) 17/25	D) 25/17	E) 11/25
Explanation:   The number of exhaustive events = ⁵⁰C₁ = 50.   We have 15 primes from 1 to 50.   Number of favorable cases are 34.   Required probability = 34/50 = 17/25   17/25
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The probability that a number selected at random from the first 50 natural numbers is a composite number is?