Question

Proof of divisibility rule of 9

Answer 1

Answer:

A number is divisible by 9 if the sum of its digits is divisible by 9. For large numbers this rule can be applied again to the result. In addition, the final iteration will result in a 9.  

Example- 18

1+8 =9

since 9 comes in the table of 9 that's why it is divisible by 9

Answer 2

Answer:

divisibility rule of 9

sum the total numerals present in the number if their sum is divisible by 9 then

the number is divisible by 9