madhav ranks seventeenth in a class of thirtyone . what is his rank from the last ?
( rank from top ) + ( rank from bottom ) - 1 = total students 17 + x - 1 = 31 x = 15 answer : c
add(subtract(add(add(multiply(const_3, const_4), add(const_1, add(multiply(const_3, const_4), const_4))), const_2), add(const_1, add(multiply(const_3, const_4), const_4))), const_1)