How many numbers less than 51 are a product of two different prime numbers?
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Given a number N . The task is to find all such numbers less than N and are a product of exactly two distinct prime numbers.For Example, 33 is the product of two distinct primes i.e 11 * 3, whereas numbers like 60 which has three distinct prime factors i.e 2 * 2 * 3 * 5.