2)How many numbers among 1, 2, 3, 1000 are not divisible by 9?
How many numbers between 1 and 1,000 are divisible by 9?
1,000 / 9 = 111 numbers that are multiples of 9 and thereby divisible by 9.
1,000 - 111 =889 numbers that are not divisible by 9.
