Options

A) 535

B) 565

C) 475

D) 585

Solution

Easy method

The two digit natural numbers which are divisible by 9 are

It’s two digit number which means cannot be less then 10 and cannot be more then 100

18, 27, 36, 45, 54, 63, 72, 81, 90, 99

Thus their sum

= 18 + 27 + 36 + 45 + 54 + 63 + 72 + 81 + 90 + 99

= 585

**Solution 585**