Ncert Solutions for Class 9 Mathematics Chapter 1: Number System Exercise 1.5

5

Question 1. Classify the following numbers as rational or irrational:

Simplify each of the following expressions:

Question 3: Recall, ? is defined as the ratio of the circumference (say c) of a circle to its diameter (say d). That is, . This seems to contradict the fact that ? is irrational. How will you resolve this contradiction?

Question 4. Represent ?9.3 on the number line

Question 5 Rationalize the denominator of the followings