the product z of two prime numbers is between 20 and 56 . if one of the prime numbers is greater than 2 but less than 6 and the other is greater than 14 but less than 30 then what is z ?
"the smallest possible product is 51 which is 3 * 17 . all other products are too big . the answer is d ."
multiply(subtract(20, const_4), const_3)