Maths Chapter 1: Number System - Class 9 Set 1

Question 1

3 Rational Numbers between 5 and 6 are:

Accepted Answer

$\frac{21}{4},\frac{11}{2},\frac{23}{4}$

Answer

$\frac{21}{4},\frac{32}{4},\frac{13}{4}%$

Answer

$\frac{25}{4},\frac{26}{4},\frac{21}{4}$

Answer

$\frac{21}{4},\frac{23}{4},\frac{27}{4}$

Question 2

There are ______ between any two numbers.

Accepted Answer

Infinite rational numbers

Answer

Zero rational numbers

Answer

Only one rational number

Answer

None of these

Question 3

All real numbers are:

Accepted Answer

Both A and C

Answer

Rational

Answer

Not rational

Answer

Irrational

Question 4

The product of two irrational numbers can be:

Accepted Answer

Both A and B

Answer

Rational Numbers

Answer

Irrational Numbers

Answer

None of these

Question 5

$\sqrt{7}$ is a/an _______ number.

Accepted Answer

Irrational

Answer

Rational

Answer

Both A and B

Answer

Whole Number

Question 6

Which of the following is an irrational number?

Accepted Answer

$\sqrt{\frac{36}{6}}$

Answer

$\sqrt{100}$

Answer

$\sqrt{49}$

Answer

0

Question 7

Choose the correct one:

Accepted Answer

Every integer is a rational number.

Answer

Every whole number is a natural number.

Answer

Every rational number is an integer.

Answer

All real numbers are Rational numbers.

Question 8

$2\sqrt{9}+3\sqrt{18}$ is equal to:

Accepted Answer

33

Answer

45

Answer

30

Answer

31

Question 9

$\sqrt{27}	imes \sqrt{18}$ is equal to:

Accepted Answer

$9\sqrt{6}$

Answer

$6\sqrt{9}$

Answer

$9\sqrt{5}$

Answer

$2\sqrt{18}$

Question 10

The value of $\sqrt{2^3+4^2+5^2}$

Accepted Answer

7

Answer

$2\sqrt{6}$

Answer

$2\sqrt{7}$

Answer

6

CHAPTER-1 NUMBER SYSTEM (SET-1)

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