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01-07-2020
Mathematics

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What is the divisibility rule of 11 ?

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01-07-2020

Answer:

Add and subtract digits in an alternating pattern (add digit, subtract next digit, add next digit, etc). Then see if that answer is divisible by 11.

For example, 121 is divisible by 11 because 1-2+1=0, and 0 is divisible by 11.

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