find the average of all prime numbers between 1 and 10
"prime numbers between 1 and 10 are 2,3 , 5,7 required average = ( 2 + 3 + 5 + 7 ) / 4 = 17 / 4 = 4.25 answer is c"
divide(add(add(add(1, const_1), add(add(1, const_1), const_2)), add(subtract(10, 1), subtract(10, const_2))), 1)