Problem: how many odd prime numbers are there less than 100 ?
Rationale: "odd prime number less than 100 : 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59 , 61 , 67 , 71 , 73 , 79 , 83 , 89 , 97 there is 24 the odd prime number answer is c"
annotated_formula: add(subtract(100, const_100), const_4)