Question

Number divisble by 9

Answer 1

any number?

Answer 2

yes name all iof them

Answer 3

the numbers whose sum of the digits is divisible by 9 is divisible by 9.
For example 18,27,90,81,....

Answer 4

sum of the digits of 18=1+8=9, which is divisible by 9
similarly sum the digits of the given number, no matter how large, if it is divisible by 9.. then the given number is divisible by 9

Answer 5

You could go on forever.