Negative Numbers and Integers

• All positive and negative numbers including zero are called integers. It is usually denoted by I or Z.

I or Z = { ... –3, –2, –1, 0, 1, 2, 3 …}

Here, –1, –2, –3 … are called negative integers whereas 1, 2, 3 … are called positive integers and 0 is taken as neutral.

• The absolute value of an integer is its numerical value regardless of its sign. The absolute value of an i…