Mathematics, 06.06.2020 18:01, lolo15xxx

Prove the divisibility test for 11: A number, written in normal base 10 form, is divisible by 11 if and only if the alternating sum of its digits is divisible by 11. To get the alternating sum, add the rst digit, subtract the second, add the third, and so on

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Prove the divisibility test for 11: A number, written in normal base 10 form, is divisible by 11 if...