Class 10 Real Numbers Quiz – NCERT Math Practice Questions

Test your knowledge of Class 10 NCERT Real Numbers with this quiz! Featuring 10 multiple-choice questions on rational numbers, irrational numbers, prime factorization, and more.

 

Results

#1. Which of the following statements about rational and irrational numbers is true?

The sum of two rational numbers is always irrational.

The product of two irrational numbers is always irrational.

The sum of a rational number and an irrational number is always irrational.

The sum of an irrational number and a rational number is always rational.

#2. What is the HCF of 12 and 16?

2

4

6

8

#3. Which of the following numbers has a non-terminating decimal expansion?

1/2

1/3

2/5

3/5

#4. If 𝑎 = 60 a=60 and 𝑏 = 48 b=48, what is their LCM?

12

24

120

240

#5. If the product of two numbers is 180 and their HCF is 6, what is their LCM?

6

30

60

180

#6. The Fundamental Theorem of Arithmetic states that every composite number can be expressed as:

A product of prime numbers in a unique way

A sum of even numbers

A product of composite numbers

A sum of odd numbers

#7. Which of the following is a rational number?

√2

√5

4

π

#8. What is the decimal expansion of 1/8?

0.125

0.25

0.75

1.25

#9. For two positive integers 𝑎 a and 𝑏 b, if HCF(a, b) = 1, what can we say about 𝑎 a and 𝑏 b?

They are both prime numbers

They are coprime

Their LCM is 1

They are multiples of each other

#10. The decimal expansion of an irrational number is always:

Terminating

Non-terminating and repeating

Non-terminating and non-repeating

Finite

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