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प्रश्न
Test the divisibility of the following number by 3:
524781
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उत्तर
A number is divisible by 3 if the sum of its digits is divisible by 3.
524781 is divisible by 3 because the sum of its digits, 5+2+4 +7+8+1, is 27, which is divisible by 3.
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