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## Number Systems Class 9 MCQs Questions with Answers

Number System Class 9 MCQ Question 1.
The value of $$\sqrt{\sqrt{2^{2}}}$$ is equal to
(a) 2–$$\frac{1}{6}$$
(b) 2-6
(c) 2$$\frac{1}{6}$$
(d) 26

Answer: (c) 2$$\frac{1}{6}$$

Class 9 Maths Chapter 1 MCQ Question 2.
Find the value of $$\sqrt{\frac{54}{250}}$$
(a) $$\frac{9}{25}$$
(b) $$\frac{3}{5}$$
(c) $$\frac{27}{125}$$
(d) $$\frac{\sqrt2}{5}$$

Answer: (b) $$\frac{3}{5}$$

Number System MCQ Class 9 Question 3.
Simplified value of (16)–$$\frac{1}{4}$$ × $$\sqrt{16}$$ is
(a) 16
(b) 4
(c) 1
(d) 0

Class 9 Number System MCQ Question 4.
Find the value of $$\sqrt{64^{-2}}$$.
(a) $$\frac{1}{8}$$
(b) $$\frac{1}{2}$$
(c) 8
(d) $$\frac{1}{64}$$

Answer: (a) $$\frac{1}{8}$$

Class 9 Maths Ch 1 MCQ Question 5.
Find the value of $$\sqrt{216}$$ – $$\sqrt{125}$$
(a) 1
(b) -1
(c) $$\sqrt{91}$$
(d) $$\frac{6}{5}$$

Class 9 Maths Chapter 1 MCQ With Answers Question 6.
When 15$$\sqrt{15}$$ is divided by 3√3 find the quotient.
(a) 5√3
(b) 3√5
(c) 5√5
(d) 3√3 Ch 1 Maths Class 9 MCQ Question 7.
If √3 = 1.732 and √2 = 1.414, find the value of $$\frac{1}{√3-√2}$$
(a) 0.318
(b) 3.146
(c) $$\frac{1}{3.146}$$
(d) $$\sqrt{1.732}$$ – $$\sqrt{1.414}$$

Maths Class 9 Chapter 1 MCQ Question 8.
Which of the following numbers is an irrational number?
(a) $$\sqrt{16}$$ – 4
(b) (3 – √3) (3 + √3)
(c) √5 + 3
(d) –$$\sqrt{25}$$

MCQ Of Number System Class 9 Question 9.
The decimal expansion of √2 is
(а) finite decimal
(b) 1.4121
(c) non-terminating recurring
(d) non-terminating non-recurring

MCQ On Number System Class 9 Question 10.
If x = $$\frac{√7}{5}$$ and $$\frac{5}{x}$$ = p√7, then the value of p is
(а) $$\frac{5}{√7}$$
(b) $$\frac{25}{7}$$
(c) $$\frac{7}{25}$$
(d) $$\frac{√7}{5}$$

Answer: (b) $$\frac{25}{7}$$

Chapter 1 Maths Class 9 MCQ Question 11.
The sum of 0.$$\bar{3}$$ and 0.$$\bar{2}$$ is
(а) $$\frac{5}{99}$$
(b) $$\frac{5}{9}$$
(c) $$\frac{5}{10}$$
(d) $$\frac{5}{100}$$

Answer: (b) $$\frac{5}{9}$$

MCQ Class 9 Maths Chapter 1 Question 12.
(√a + √b) (√a – √b) is
(a) a + b
(b) a – b
(c) 2√a
(d) 2√b

Class 9 Math Chapter 1 MCQ Question 13.
$$\sqrt{12}$$ × √8 is equal to
(a) 2√6
(b) 3√6
(c) 4√6
(d) 6√6

Class 9 Chapter 1 Maths MCQ Question 14.
Find the value of $$\frac{2^0+7^0}{5^0}$$
(a) 2
(b) 0
(c) $$\frac{9}{5}$$
(d) $$\frac{1}{5}$$

MCQ Questions For Class 9 Maths Chapter 1 Question 15.
A rational number lying between √2 and √3 is
(a) $$\frac{√2+√3}{2}$$
(b) √6
(c) 1.6
(d) 1.9

Class 9th Maths Chapter 1 MCQ Question 16.
The rational number between –$$\frac{1}{5}$$ and –$$\frac{2}{5}$$ is
(a) 4
(b) –$$\frac{1}{4}$$
(c) –$$\frac{3}{10}$$
(d) –$$\frac{7}{25}$$

Answer: (c) –$$\frac{3}{10}$$ Class 9 Maths MCQ Chapter 1 Question 17.
If 8x = $$\frac{64}{2^x}$$ then find the value of x.
(a) 4
(b) 2
(c) $$\frac{1}{2}$$
(d) $$\frac{3}{2}$$

Answer: (d) $$\frac{3}{2}$$

MCQ Of Maths Class 9 Chapter 1 Question 18.
The simplified value of (81)–$$\frac{1}{4}$$ × $$\sqrt{81}$$ × (81)0.2 is
(a) 9
(b) 3
(c) 1
(d) 0

Maths Chapter 1 Class 9 MCQ Question 19.
Value of [(81-1/2)-1/4]² is
(a) 3
(b) $$\frac{1}{3}$$
(c) 9
(d) $$\frac{1}{9}$$

MCQ Questions For Class 9 Maths Number System With Answers Question 20.
If x1/12 = 491/24 then find the value of x.
(a) 49
(b) 2
(c) 12
(d) 7