the product z of two prime numbers is between 20 and 60 . if one of the prime numbers is greater than 2 but less than 6 and the other is greater than 18 but less than 36 then what is z ?
"the smallest possible product is 57 which is 3 * 19 . all other products are too big . the answer is e ."
multiply(subtract(20, const_4), const_3)