the probability that a number selected at random from first 50 natural numbers is a composite number is
"the number of exhaustive events = 50 c 1 = 50 . we have 15 primes from 1 to 50 . number of favourable cases are 34 . therefore , required probability = 34 / 50 = 17 / 25 . answer : b"
divide(multiply(subtract(multiply(const_6, const_3), const_1), const_2), 50)