how many numbers from 10 to 46 are exactly divisible by 3 ?
"12 , 15 , 18 , 21 , 24 , 27 , 30 , 33 , 36 , 39 , 42 , 45 . 12 numbers . 10 / 3 = 3 and 46 / 3 = 15 = = > 15 - 3 = 12 . therefore 12 digits b )"
add(divide(subtract(multiply(floor(divide(46, 3)), 3), multiply(add(floor(divide(10, 3)), const_1), 3)), 3), const_1)