Divisibility Rule for 9 :
A number is divisible by 9, if the sum of the digits in the number is divisible by 9 or multiple of 9.
Example 1 :
Check whether 9477 is divisible by 8.
Add all the digits in the number 9477.
9 + 4 + 7 + 7 = 27
The sum of the digits in the given number 9477 is 27 which is a divisible by 9.
So, 9477 is divisible by 9.
Example 2 :
Check whether 12708 is divisible by 9.
Add all the digits in the number 12708.
1 + 2 + 7 + 0 + 8 = 18
The sum of the digits in the given number 12708 is 18 which is divisible by 9.
So, 12708 is divisible by 9.
Example 3 :
Check whether 3645 is divisible by 9.
Add all the digits in the number 3645.
3 + 6 + 4 + 5 = 18
The sum of the digits in the given number 3645 is 18 which is a multiple of 9.
So, 3645 is divisible by 9.
Example 4 :
Check whether 948 is divisible by 9.
Add all the digits in the number 948.
9 + 4 + 8 = 21
The sum of the digits in the given number 948 is 21 which is not divisible by 9.
So, 948 is not divisible by 9.
After having gone through the stuff given above, we hope that the students would have understood the divisibility rule for 9.
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