26-01-2016
Mathematics

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n is a positive integer. Decide whether 5n+3 is always even, always odd or could be either odd or even.

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Tarquinius Tarquinius

26-01-2016

Just substitute n with an odd number, say 1, and you get an even number. Then try an even number, like 2, and you get an odd number. Therefore it can be both odd and even.

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