Question

How many numbers between 1 and 101 are evenly divisible by 4 but not by 8?

Answer 1

101/4 = 25.25

so 25 numbers are divisible by 4

101/8 = 12.625

so 12 numbers are divisible by 8

25-12 =13

so 13 numbers are divisible by 4 but not by 8