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प्रश्न
Test the divisibility of the following number by 3:
872645
उत्तर
A number is divisible by 3 if the sum of its digits is divisible by 3.
872645 is not divisible by 3 because the sum of its digits, 8+7+2+6+4+5, is 32, which is not divisible by 3.
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