How many numbers between 1 and 100 ?

tamiri wrote:How many numbers between 1 and 100 are not divisible by 2 or 3?

My real question is: How many numbers are between 1 and 100?

I figured that there are 49 numbers divisible by 2 [(98-2)/2+1] and
33 numbers divisible by 3 [(99-3)/3+1].
There are 16 numbers divisible by 6 [(96-6)/6+1)]
Hence, 49+33-16= 66 numbers that are divisible by 2 or 3.
Now the trick for me is do I make 99-66=33 or 98-66=32?
I would say there are 98 numbers between 1 and 100 because it does not say “inclusive”.
However, in most of suggested answers it says 99 numbers.

Could anyone please explain?

Thanks,
Tamir

By default, "between" is exclusive of the stated endpoints of the interval. if the problem writers intend that "between" be inclusive, they'll write "inclusive".