Question

How many 3-digits numbers are there which are completely divisible by 6?

Answer 1

The first three digit which is divisible by 3 is 102

A.P. = 102,108.....996

Let An =996

a +(n-1)d=996

102+(n-1)6=996

6(17+(n-1) )=996

17+n-1=996/6

16+n= 166

n = 166-16

n = 150

Therefore there are 150 number