how many positive integers less than 200 are there such that they are multiples of 13 or multiples of 12 ?
"total multiples of 13 : 15 ( first multiple : 13 , last multiple : 195 ) total multiples of 12 : 16 ( first multiple : 12 , last multiple : 192 ) multiple of 12 and 13 : 1 ( 156 ) 15 + 16 - 1 = 30 answer : c"
divide(factorial(subtract(add(const_4, 13), const_1)), multiply(factorial(13), factorial(subtract(const_4, const_1))))