Odd number

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An odd number is a number which is not a multiple of two. If it is divided by two the result is a fraction. One is the first odd positive number. The next four bigger odd numbers are three, five, seven, and nine.

A number that is not an odd number is an even number.

An even number is defined as a whole number that is a multiple of two. If an even number is divided by two, the result is another whole number. On the other hand, an odd number, when divided by two, will result in a fraction.

Since odd and even numbers are defined only in reference to the set of whole numbers (0,1,2,3, .....), all negative numbers are neither odd nor even. In fact, to question whether a negative number is odd or even is pointless.

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