Is the sum of an even number and an odd number even or odd
Note
Adding an even number (2k) and an odd number (2m+1) gives 2(k+m)+1, which is odd, so the sum of an even and an odd number is odd.
Is the sum of an even number and an odd number even or odd
Adding an even number (2k) and an odd number (2m+1) gives 2(k+m)+1, which is odd, so the sum of an even and an odd number is odd.