Class 9 MCQ Questions of Number system will shape a huge piece of the Mathematics question paper in CBSE Class 9 Annual Exam. Students can without much of a stretch score full marks in these target type questions with a little difficult work and great practice. We are giving here the MCQ questions of the Number System which are set up by subject specialists. Every one of the questions depends on significant ideas engaged with the section. This set of significant questions will frame a decent practice test for students, making them change all crucial ideas rapidly.
Class 9 Maths syllabus incorporates some early on parts of various numerical branches. The branches are arithmetic, algebra, geometry, trigonometry, etc. Chapter 1 of the Class 9 Maths syllabus is quite possibly the main sections of arithmetic. This part is about the number System. The understudies ought to become familiar with the number system effectively for their future accommodation. The number system is quite possibly the main basic subjects of science. To become familiar with this subject with substantial essential information the students should peruse this part cautiously. They should be taken care of different numerical issues all alone on this subject. It will assist the understudies with being more productive and certain.
Following are some number system MCQ Questions for class 9 maths with answers. Each question comprises 4 choices, out of which one is right.
Practice Class 9 Maths MCQ Questions
- Write three rational numbers between 4 and 5?
(a) 12/6, 13/6, 14/6
(b) 12/7, 13/7, 14/7
(c) 17/4, 18/4, 19/4
(d) 17/2, 18/13, 19/23
- In between two rational number there is/are:
(a) Exactly one rational number
(b) Infinitely many rational number
(c) Many irrational numbers
(d) Only irrational numbers
- The product of a rational and an irrational numbers is:
(a) Always an integer
(b) Always a rational number
(c) Always an irrational number
(d) Sometimes rational and sometimes irrational
- The decimal expansion of an irrational number may be:
(a) Terminating
(b) Recurring
(c) Either terminating or non- terminating
(d) Non-terminating and non-recurring
- A rational number between √2 and √3:
(a) 1.9
(b) (√2. √3)/2
(c) 1.5
(d) 1.8
- Can we write 0 in the form of p/q?
(a) Yes
(b) No
(c) Cannot be explained
(d) None of the above
- The three rational numbers between 3 and 4 are:
(a) 5/2, 6/2, 7/2
(b) 13/4, 14/4, 15/4
(c) 12/7, 13/7, 14/7
(d) 11/4, 12/4, 13/4
- Every rational number is:
(a) Whole number
(b) Natural number
(c) Integer
(d) Real number
- √9 is __________ number.
(a) A rational
(b) An irrational
(c) Neither rational nor irrational
(d) None of the above
- Which of the following is an irrational number?
(a) √16
(b) √(12/3)
(c) √12
(d) √100
- 3√6 + 4√6 is equal to:
(a) 6√6
(b) 7√6
(c) 4√12
(d) 7√12
- √6 x √27 is equal to:
(a) 9√2
(b) 3√3
(c) 2√2
(d) 9√3
- Which of the following is equal to x3?
(a) x6-x3
(b) x6.x3
(c) x6/x3
(d) (x6)3
- 4√5 + 5√5 is equal to:
(a) 9√5
(b) 9√10
(c) 5√10
(d) 7√5
- Which of the following is an irrational number?
(a) √23
(b) √225
(c) 0.3796
(d) 7.478478
- Which of the following is an irrational number?
(a) 0.14
(b) 0.14\(\overline{16}\)
(c) 0.\( \overline{1416}\)
(d) 0.4014001400014…
- 2√3+√3 =
(a) 6
(b) 2√6
(c) 3√3
(d) 4√6
- Which of the following is rational?
(a) 4/0
(b) 0/4
(c) √3
(d) π
- The irrational number between 2 and 2.5 is
(a) √11
(b) √5
(c) √22.5
(d) √12.5
- The decimal representation of the rational number is
(a) Always terminating
(b) Either terminating or repeating
(c) Either terminating or non-repeating
(d) Neither terminating nor repeating
Answer
- Answer: (c) 17/4, 18/4, 19/4
Explanation: There are several rational numbers between 4 and 5.
The numbers are between 16/4 and 20/4.
Therefore, the answer is c, that is, 17/4, 18/4, 19/4
- Answer: (b) Infinitely many rational numbers
- Answer: (c) Always an irrational number
- Answer: (d) Non-terminating and non-recurring
- Answer: (c) 1.5
- Answer: (a) Yes
Explanation: 0 is a rational number and hence it can be written in the form of p/q.
Example: 0/4 = 0
- Answer: (b) 13/4, 14/4, 15/4
Explanation: There are many rational numbers between 3 and 4
To find 3 rational numbers, we need to multiply and divide both the numbers by 3+1 = 4
Hence, 3 x (4/4) = 12/4 and 4 x (4/4) = 16/4
Thus, three rational numbers between 12/4 and 16/4 are 13/4, 14/4 and 15/4.
- Answer: (d) Real number
- Answer: (a) A rational
Explanation: √9 = 3
Hence, √9 is a rational number.
- Answer: (c) √12
Explanation: √12 cannot be simplified to a rational number.
- Answer: (b) 7√6
Explanation: 3√6 + 4√6 = (3+4)√6 = 7√6
- Answer: (a)
Explanation: √6 x √27 = √(6 x27) = √(2x3x3x3x3) = 3×3√2 = 9√2
- Answer: (c) x6/x3
Explanation: x6/x3 = x6-3 = x3
- Answer: (a) 9√5
- Answer: (a) √23
Explanation: √23 = 4.79583152331…
Since the decimal expansion of the number is non-terminating non-recurring. Hence, it is an irrational number.
- Answer: (d) 0.4014001400014…
Explanation: 0.4014001400014…is an irrational number as it is non-terminating and non-repeating.
- Answer: (c) 3√3
Explanation: 2√3+√3 = (2+1)√3= 3√3.
- Answer: (b) 0/4
Explanation: 0/4 is a rational number that is equal to 0. Whereas π and √3 are irrational numbers and 4/0 is meaningless.
- Answer: (b) √5
Explanation: The irrational number between 2 and 2.5 is √5 because the approximate value of √5 is 2. 23606…
- Answer: (b) Either terminating or repeating
Explanation: As per the definition of rational number, its decimal representation is either terminating or repeating.
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