Ex 1.5,5 - Chapter 1 Class 9 Number Systems (Important Question)
Last updated at Aug. 25, 2021 by Teachoo
Chapter 1 Class 9 Number Systems
Ex 1.1,3
Important
Ex 1.1, 4 (i) Important
Ex 1.2, 1 (i)
Ex 1.2, 3 Important
Example 7 Important
Example 9 Important
Example 10 Important
Ex 1.3, 3 (i)
Ex 1.3, 8 Important
Ex 1.3, 9 (i)
Example 16 (i) Important
Example 19
Ex 1.5, 1 (i)
Ex 1.5, 2 (i) Important
Ex 1.5, 4
Ex 1.5, 5 (i) You are here
Example 21 (i)
Ex 1.6, 1 (i)
Ex 1.6, 2 (i) Important
Ex 1.6, 3 (i) Important
Class 9
Important Questions for Exam - Class 9
-
Chapter 1 Class 9 Number Systems
- Chapter 2 Class 9 Polynomials
- Chapter 3 Class 9 Coordinate Geometry
- Chapter 4 Class 9 Linear Equations in Two Variables
- Chapter 5 Class 9 Introduction to Euclid's Geometry
- Chapter 6 Class 9 Lines and Angles
- Chapter 7 Class 9 Triangles
- Chapter 8 Class 9 Quadrilaterals
- Chapter 9 Class 9 Areas of parallelograms and Triangles
- Chapter 10 Class 9 Circles
- Chapter 11 Class 9 Constructions
- Chapter 12 Class 9 Herons Formula
- Chapter 13 Class 9 Surface Areas and Volumes
- Chapter 14 Class 9 Statistics
- Chapter 15 Class 9 Probability
Transcript
Ex1.5, 5 Rationalize the denominators of the following: (i) 1/√7 We need to rationalize i.e. remove root from denominator Hence multiplying and dividing by √7 1/√7 = 1/√7 ×√7/√7 = √7/(√7)2 = √7/7
