NCERT Class 9 Solutions: Number Systems (Chapter 1) Exercise 1.5 – Part 1
Q1 Classify the following numbers as rational or irrational:
Solution:

Given multiple numbers and classify the numbers as rational or irrational

Since it is nonterminating and nonrecurring number
So, it is an irrational number

Since the number can be written form
So, it is a rational number

Since the number can be written form
So, it is a rational number

Since it is nonterminating and nonrecurring number
So, it is an irrational number

Since it is nonterminating and nonrecurring number
So, it is an irrational number
Q2 Simplify each of the following expressions:
Solution:

=

Using identify

Using identify

Using identify