how many positive integers less than 100 have a remainder of 6 when divided by 13 ?
"we have to include 6 also . as 13 * 0 + 6 = 6 if somebody says to divide 6 by 13 , we will be telling we have 0 quotient and remainder as 6 . answer is c"
divide(factorial(subtract(add(const_4, 6), const_1)), multiply(factorial(6), factorial(subtract(const_4, const_1))))