Question

how many posotive numbers are there between 100 and 999

Answer 1

In order to solve such questions look at quotient when you divide the lower limit given by 5.

i.e. 100/5 = 20

Next, divide the upper limit by 5 .

i.e. 999/5 = 199.8

Now, since our task is to find numbers from 100 - 999 that are divisible by 5 we could say that there are (199 - 20 = 179) numbers between 100 and 999 that are divisible by 5. However, 100 is also a multiple of 5 in the given range and thus, needs to be included.

So, the required answer is 179 + 1 = 180.