How many positive integers less than 500 are the product of exactly two distinct (meaning different) primes, each of which is greater than 10?
(143, 187, 209, 221, 247, 253, 299, 319, 323, 341, 377, 391, 403, 407, 437, 451, 473, 481, 493) >>Total = 19 - all numbers < 500 with 2 distinct prime factors > 10 each.
