Use divisibility tests to check 45628 is divisible by 11 ?
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- Take the alternat-ing sum of the digits in the number, read from left to right. If that is divisible by 11, so is the original number. So, for, 2728 has alternating sum of digits 2 – 7 + 2 – 8 = -11. Since -11 is divisible by 11, so is 2728
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