If the sum of two numbers is even, the two numbers are either both even or both odd. A few examples:
2 + 4 = 6 (even + even = even)
2 + 3 = 5 (even + odd = odd)
5 + 2 = 7 (odd + even = odd)
7+13 = 20 (odd + odd = even)
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The sum of two even numbers is always an even number.
The sum of two odd numbers or two even numbers is an even number. The sum of an odd number and an even number is an odd number.
The sum of two odd numbers MUST be even. So there is no answer to the question.
To find the even two-digit numbers where the sum of the digits is 5, we need to consider the possible combinations of digits. The digits that sum up to 5 are (1,4) and (2,3). For the numbers to be even, the units digit must be 4, so the possible numbers are 14 and 34. Therefore, there are 2 even two-digit numbers where the sum of the digits is 5.
The sum of two odd numbers is always an even number