SOLUTION
90 divided by 2 = 45
90 divided by 3 = 30
90 divided by 4 = 22 remainder 1
90 divide by 5 = 18
90 divided by 6 = 15
90 divided by 9 = 10 and
90 divided by 10 = 9
So 90 is divisible by 2, 3, 5, 6, 9, and 10 only. So the last option is the correct answer.
