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प्रश्न
Test the divisibility of the following numbers by 9:
98712
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उत्तर
A number is divisible by 9 if the sum of its digits is divisible by 9.
98712 is divisible by 9, because the sum of its digits, 9 + 8 + 7 + 1 + 2, is 27, which is divisible by 9.
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