# Even and odd

# Even and odd

An even number is an integer that is divisible by 2 and an odd number is an integer that is not divisible by 2. Thus 2, 4, 6, 8 … are even numbers and 1, 3, 5, 7 … are odd numbers. Any even number can be written as 2*n* where n is an integer and any odd number can be written as 2*n* +1 or as 2*n* –1, where *n* is an integer. Both odd and even numbers may be negative or postive.

The sum, difference, or product of even numbers is an even number. On the other hand, the product of odd numbers is odd, but the sum or difference of two odd numbers is even.

#### More From encyclopedia.com

Imaginary Number , Imaginary number
An imaginary number is the square root of a negative real number. (The square root of a number is a second number that, when multipl… Numbers , numbers Numbers is the name of the fourth book of the Bible, relating the experiences of the Israelites in the wilderness after Moses led them out of… Fibonacci Series , Fibonacci series A sequence of numbers in which each number is the sum of the two preceding numbers, e.g. 0,1,1,2,3,5,8,…
The Fibonacci numbers Fn ar… Arithmetic , Arithmetic is a branch of mathematics concerned with the numerical manipulation of numbers using the operations of addition , subtraction , multiplic… Zero , Zero is often equated with "nothing," but that is not a good analogy. Zero can be the absence of a quality, but it can also be a starting point, such… Real Numbers , A real number is any number which can be represented by a point on the number line. The numbers 3.5, 0.003, 2/3, π, and are all real numbers.
The rea…

#### You Might Also Like

#### NEARBY TERMS

**Even and odd**