Question

How many three digit numbers are there between 101 to 999?

Answer 1

The three digit number between101 and 999 are 898

Answer 2

a=101 ,d=1, last term =999

by formula

L=a+(n-1)×d

999=101+(n-1)×1

999-101=(n-1)

898=(n-1)

898+1=n

899=n

So there are 899 terms between 101 to 999