Real Numbers mathematics Quiz-1

10th class mathematics quiz

Real numbers include all the rational and irrational numbers. They are used to represent distances, measurements, and quantities in real-world problems. In this chapter, we will study important properties and theorems related to real numbers.

 

Results

#1. Which of the following numbers is a rational number?

√2

√3

4/5

π

Try it again

#2. The decimal expansion of a rational number is always:

Terminating

Non-terminating

Non-terminating and repeating

Either terminating or non-terminating repeating

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

7/12

3/8

11/15

1/3

#4. If two numbers have no common factors other than 1, they are called:

Prime numbers

Coprime numbers

Composite numbers

Twin primes

#5. The Fundamental Theorem of Arithmetic states that:

Every composite number can be expressed as a sum of prime factors.

Every number can be expressed as a product of its digits.

Every composite number can be expressed as a product of prime factors in a unique way.

Every number has a unique decimal expansion

#6. The HCF of two consecutive even numbers is:

1

2

5

None of these

#7. If the HCF of two numbers is 12 and their LCM is 360, then the product of the two numbers is:

12

180

372

4320

#8. Which of the following is an example of an irrational number?

7

√16

4.5

√5

#9. The number 0.333… in decimal form is:

Rational and terminating

Rational and non-terminating

Irrational and terminating

Irrational and non-terminating

#10. For any integer 𝑎 a and 𝑏 b, the least common multiple (LCM) of 𝑎 a and 𝑏 b is given by:

Product of 𝑎 a and 𝑏 b

Product of HCF and the sum of 𝑎 a and 𝑏 b

Product of HCF and LCM of 𝑎 a and 𝑏 b

Product of HCF and the absolute value of 𝑎 − 𝑏 a−b

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