how many odd prime numbers are there less than 50 ?
"odd prime number less than 50 : 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 there is 14 the odd prime number answer is d"
add(subtract(50, const_100), const_4)