Problem: how many prime numbers are between 13 / 3 and 83 / 6 ?
Rationale: "13 / 3 = 4 . xxx 83 / 6 = 13 . xxx so we need to find prime numbers between 4 ( exclusive ) - 12 ( inclusive ) there are 2 prime numbers 7 11 hence answer will be ( b ) 2 b"
annotated_formula: floor(const_2)