how many multiples of 10 are there between 10 and 1000 , exclusive ?
"98 multiples of 5 between 1 and 36 exclusive . from 10 * 2 upto 10 * 99 , ( 2 , 3,4 , . . . , 99 ) . hence , 98 multiples ! correct option is a"
add(divide(subtract(1000, 10), 10), const_1)