RS Aggarwal & V Aggarwal - Mathematics

Book: RS Aggarwal & V Aggarwal - Mathematics

Chapter: 1. Real Number

Subject: Mathematics - Class 9th

Q. No. 18 of Formative Assessment (Unit Test)

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18

If and find the value of

We have,



On rationalizing we get,







Now,





Now,








Now,





Chapter Exercises

Exercise 1A
Exercise 1B
Exercise 1C
Exercise 1D
Exercise 1E
Exercise 1F
CCE Questions
Formative Assessment (Unit Test)

More Exercise Questions

1

Find two rational numbers lying between

2

Find four rational numbers between

3

Write four irrational numbers between 0.1 and 0.2.
4

Express in its simplest form.
5

Express as a pure surd.
6

Divide

7

Express as a rational number in the form where p and q are integers and

8

If find the values of a and b.
9

The simplest form of is
10

Which of the following is irrational?
11

Between two rational numbers
12

Decimal representation of an irrational number is
13

If

14

Rationalize the denominator of

15

Simplify:

16

Find the smallest of the numbers

17

Match the following columns:


Column I



Column II



A.


B.


C.


D.



(p) a rational number


(q) an irrational number


(r)


(s)



The correct answer is:


(a)-……., (b)-……., (c)-……., (d)-…….,
18

If and find the value of

19

If find the value of

20

Prove that

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