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Divisibility Rule for 3

A number is d...

Question

A number is divisible by $9$ , if the sum of the digits of the number is divisible by _______ .

A

3

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B

9

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C

6

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D

2

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Solution

The correct option is A $9$
A number is divisible by 9 if the sum of the digits of the number is divisible by 9.
For example $81$ is divisible by $9$ as $8 + 1 = 9$ is divisible by $9$ .

So, option B is correct.

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