Question

How to find
How many 3 digit numbets are divisible by 9

Answer 1

just check number which's sum of all digit is divisible by 9

Answer 2

AP... 108,........999

WITH THE HELP OF AP

An=999
a=108
d=9
n=?

An=a+(n-1)d
999=108+(n-1)*9
999-108=9n-9
891+9=9n
900/9=n
n=100


HOPE ITS HELPFUL AND RGT