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 answers.
A) 17 / 26  B) 17 / 25  C) 17 / 20  D) 17 / 22  E) 17 / 21

Rationale: the number of exhaustive events = ⁵ ⁰ c ₁ = 50 . we have 15 primes from 1 to 50 . number of favourable cases are 34 . required probability = 34 / 50 = 17 / 25 . nswer : b
Answer: B