how many positive integers less than 100 have a remainder of 5 when divided by 13 ?
"we have to include 5 also . as 13 * 0 + 5 = 5 if somebody says to divide 5 by 13 , we will be telling we have 0 quotient and remainder as 5 . answer is a"
divide(factorial(subtract(add(const_4, 5), const_1)), multiply(factorial(5), factorial(subtract(const_4, const_1))))