If n is an even it will be divisible by 8.

For example: 2 x 3 x 4 (has 2^3 in it, so it is divisible by 8)
4x5x6 (has 2^3 in it, so it is divisible by 8)


so that gives us 48 that are divisible by 8.

Now you have to look at when n is an odd number. When n is odd and the n+1 is divisible by 8, then these will be divisible by 8 as well.


so for example... 7 x8 x9..... 15x16x17.. These will all be divisible by 8 as well.

96/8 = 12


(48+12)/96 = 60/96 = 5/8