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Why do addresses have even and odd number?
Usually the even numbers are one side of the street and the odds on the other side.
Why are there even house numbers on one side of the street and odd numbers on the other side?
No specific reason - and they don't always follow that pattern... There are many streets in the UK that have sequential numbers on one side, continuing on the other. This can happen when a row of houses is built next to private land.
Why are houses numbered odd and even?
So people will be able to mail stuff to your house.
Why is and odd number minus an even number odd?
Because the second number from an odd number is odd, and every other number is an odd number. In fact, if you add or subtract an even number with any number, the result keeps the same parity as the other number. So an odd number minus an even number is odd, while an even number minus and even number is even.
Is the sum of two square consecutive numbers an odd number?
Yes. One has to be the square of an odd number. The other square has to the the square of the even number either before or after the odd number. If this is confusing just plug in real values. In either case, an odd times and odd is odd. Therefore one of the squares has to be odd. AN even times an even, however, is always even. Therefore, the second square has to be even. Thus, one of the squares is even and the other is odd. An even plus and odd is always odd.
