Question

Sort the following types of numbers in the increasing order of their quantity from top to bottom.

• A. Rational Numbers
• B. Real Numbers
• C. Integers
• D. Natural Numbers
• E. Whole Numbers

Answer 1

1. Natural numbers are counting numbers starting from 1, i.e., $1,2,3,4,...$

2. Whole numbers are counting numbers including zero, i.e., $0,1,2,3,4,...$

3. Integers are whole numbers including the negative of natural numbers, i.e., $...-3,-2,-1,0,1,2,3,...$

4. Rational numbers are all the integers including the fractions between integers, i.e., $\frac{1}{2},-\frac{3}{2},0,1,2,\frac{5}{6},...$

5. Real numbers include all of the above mentioned numbers and irrational numbers.

So, the correct order is:
1 < 2 < 3 < 4 < 5