Rules Of Even and Odd Number Operations

There are certain rules to the mathematical operation of Odd and Even numbers.

The followings rules illustrate the point:

1) Odd + Odd = Even number
2) Odd x Odd = Odd number
3) Even + Even = Even number
4) Even x Even = Even number
5) Even x Odd = Even number
6) Even + Odd = Odd number

Though they are basic mathematical concepts, they may trick the mind when one is not careful.
It is a form of self-checking too.

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