An even number is an integer which is "evenly divisible" by two. This means if the integer is divided by 2, there is no remainder. Zero is an even number because zero divided by two is zero. The next four bigger even numbers are two, four, six, and eight. You can tell if any decimal number is an even number if the last digit is an even number.
An integer that is not an even number is an odd number.
Addition and subtraction [change]
- even + even = even
- even + odd = odd
- odd + odd = even
To find the set of even natural numbers, we use 2N where N is any natural number. Any number multiplied with an even number will result in an even number. For example:
0N, 2N, 4N, 6N, ... (where N is any natural number)
the result is always an even number.