Question

what is divisibility rule of no. 9​

Answer 1

Answer:

If the sum of the digits of a number is divisible by 9, then the number is divisible by 9.

Step-by-step explanation:

for example : let us find out is 81 divisible by 9 or not

sum of digits = 8 + 1 = 9

Therefore, 9 is divisible by 9. So number 81 will also be divisible by 9

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