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) 17/27  B) 17/25  C) 17/29  D) 17/98  E) 17/20
Explanation:   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: Option 17/25
<result>B</result>
The probability that a number selected at random from the first 50 natural numbers is a composite number is -.