The probability that a number selected at random from the first 50 natural numbers is a composite number is
Choose one:	A) 17/26	B) 17/25	C) 17/20	D) 17/22	E) 17/21
The number of exhaustive events = ⁵⁰C₁ = 50.   We have 15 primes from 1 to 50.   Number of favourable cases are 34.   Required probability = 34/50 = 17/25.   nswer: 17/25
<result>B</result>
The probability that a number selected at random from the first 50 natural numbers is a composite number is