The probability that a number selected at random from the first 50 natural numbers is a composite number is  Choose the correct choice from the following:
A) 21/25
B) 17/25
C) 4/25
D) 8/25
E) 9/25
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.   ANSWER:17/25
<result>B</result>
The probability that a number selected at random from the first 50 natural numbers is a composite number is