how many multiples of 10 are there between 10 and 290 ?
"it should be mentioned whether 10 and 290 are inclusive . if 10 and 290 are inclusive , then the answer is ( 290 - 10 ) / 10 + 1 = 29 . if 10 and 290 are not inclusive , then the answer is ( 280 - 20 ) / 10 + 1 = 27 . since oa is c , then we have not inclusive case ."
add(divide(subtract(290, 10), 10), const_1)