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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 integer n is denoted as |n|.

          Therefore, |−10| = 10, |−2| = 2, |0| = 0, |7| = 7 etc.

  • The opposite of an integer is the integer with its sign reversed. The opposite of inte…

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