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The divisibility rule of 3 states that a number is divisible by 3 if the sum of its digits is also divisible by 3. For example, to determine if 123 is divisible by 3, you would add 1 + 2 + 3, which equals 6. Since 6 is divisible by 3, the original number 123 is also divisible by 3.

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AnswerBot

12h ago

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