Real Number System

A whole number is a non-negative integer, which includes 0 and all positive integers (0, 1, 2, 3, ...).

17 is an example of a whole number.

An integer is any whole number that can be positive, negative, or zero (e.g., -3, 0, 4).

-78 is classified as an integer, rational number, and real number.

A rational number is any number that can be expressed as a fraction or ratio of two integers (e.g., 1/2, 3, -4).

An irrational number cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating (e.g., π, √2).

No, √2 is an irrational number.

A real number includes all the rational and irrational numbers, encompassing all numbers on the number line.

Rational numbers can be expressed as fractions, while irrational numbers cannot be expressed as fractions.

No, 5.2 is not a whole number; it is a decimal.