LizzySailor227 LizzySailor227

21-12-2016
Mathematics

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why is the sum of to odd numbers always even?

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apologiabiology apologiabiology

21-12-2016

any even number can be written in form 2n where n is an integer
any odd number can be written in form 2n+1 where n is an integer

so the sum of 2 odd numbers is 2n+1+2n+1 or
4n+2 or
2n+2n+2 or
even+even+even

it is even because of math

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