Question

Match the following.

• A. Rational number
• B. Irrational Number
• C. Integer
• D. Whole number

Answer 1

When we add 0 to the set of natural numbers, we get whole numbers. Hence, 0 is a whole number.

When we add the set of negative numbers such as -1, -2, -3, ... to the set of whole numbers, we get integers. Hence, -25 is an integer.

Any number written in the form of $\frac{p}{q},$ where p and q are integers and q is not equal 0 is called a Rational number. So, $\frac{5}{2}$ is a Rational number.

Any number that cannot be written in the form of $\frac{p}{q},$ where p and q are integers and q is not equal 0 is called an Irrational number.

So, $\sqrt{2}$ is an irrational number.