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It is not possible to add up an even and uneven number to attain ten, or any other even number.

Consider the following a proof:

a is a even number

b is a uneven number, this means that (b-1) is a even number.

a+b = a + (b-1) + 1

2 even numbers added up always result in an even number. And each time, 1 gets added to that sum, netting a uneven number.

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โˆ™ 2011-05-11 19:58:03
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Q: What is an even and odd number that add up to ten?
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