in n is a positive integer less than 200 , and 18 n / 60 is an integer , then n has how many different positive prime factors ?
"( a ) . 18 n / 60 must be an integer . = > 3 n / 10 must be an integer . hence n must be a multiple of 2 * 5 . = > n has 2 different prime integers ."
add(divide(add(const_1, const_4), divide(divide(divide(60, const_2), const_2), const_3)), const_2)