A number divisible by 2 is called an even number. All numbers whose unit digit(last digit) is either 0,2,4,6 or 8 is an even numbers.

The set of all even numbers is represented as follows:

Even numbers = { 2n: n ∈  Z } where Z is the set of all integers.

• Zero is an even number.
• The addition or subtraction of two even numbers always results in an Even number
• When a number (even or odd) is multiplied by an even number, it results in an Even Number.
• When an even number is subtracted from an odd number or vice-versa, it results in an odd number. ( 7 – 4 = 3 , 8 – 3 = 5 …)
• When two odd numbers are subtracted, it results in an even number.