Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: Ephemeris to Evolution - Historical Background

Even and Odd

integer divisible difference written

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 2n where n is an integer and any odd number can be written as 2n + 1 or as 2n - 1, where n is an integer.

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.

[back] Evapotranspiration

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or