# MCQS: Types of Numbers: Mathematics MCQs

# Types of Numbers

**1. Which of the following is not a rational number?**

A) 0

B) 3

C) -1/2

D) √2

**Answer: D) √2**

**2. Which of the following is a prime number?**

A) 6

B) 11

C) 21

D) 35

**Answer: B) 11**

**3. Which of the following is an irrational number?**

A) 2

B) 4

C) 6

D) √5

**Answer: D) √5**

**4. Which of the following is a real number?**

A) i

B) -√3

C) 0

D) 3/4

**Answer: D) 3/4**

**5. Which of the following is a natural number?**

A) -3

B) 0

C) 1/2

D) 7

**Answer: D) 7**

**6. Which of the following is a composite number?**

A) 1

B) 2

C) 5

D) 10

**Answer: D) 10**

**7. Which of the following is a perfect square?**

A) 12

B) 25

C) 33

D) 42

**Answer: B) 25**

**8.Which of the following is a prime factorization of 60?**

A) 2 × 2 × 3 × 5

B) 3 × 3 × 5 × 5

C) 2 × 2 × 2 × 5 × 5

D) 2 × 3 × 5 × 7

**Answer: C) 2 × 2 × 2 × 5 × 5**

**9. Which of the following is a complex number?**

A) 2

B) -3

C) 5i

D) √6

**Answer: C) 5i**

**10. Which of the following is a prime factorization of 24?**

A) 2 × 2 × 2 × 3

B) 2 × 2 × 3 × 4

C) 3 × 4 × 4

D) 2 × 2 × 2 × 2 × 3

**Answer: A) 2 × 2 × 2 × 3**

**11. Which of the following is a whole number?**

A) -3/4

B) 0

C) √2

D) 1/2

**Answer: B) 0**

**12. Which of the following is a perfect cube?**

A) 8

B) 27

C) 36

D) 64

**Answer: B) 27**

**13. Which of the following is a non-negative integer?**

A) -5

B) 0

C) 2/3

D) √2

**Answer: B) 0**

**14. Which of the following is a rational number?**

A) √5

B) -1

C) 2/3

D) π

**Answer: C) 2/3**

**15. Which of the following is a prime factorization of 48?**

A) 2 × 2 × 2 × 3 × 3

B) 2 × 2 × 2 × 2 × 3

C) 2 × 2 × 2 × 4 × 3

D) 3 × 3 × 4 × 4

**Answer: B) 2 × 2 × 2 × 2 × 3**

**16. Which of the following is a perfect square?**

A) 16

B) 21

C) 27

D) 33

**Answer: A) 16**

**17. Which of the following is a natural number?**

A) -1

B) 0

C) 2/3

D) 10

**Answer: D) 10**

**18. Which of the following is an irrational number?**

A) 3/4

B) -√3

C) 0

D) 2

**Answer: B) -√3**

**19. Which of the following is a composite number?**

A) 1

B) 3

C) 11

D) 21

**Answer: D) 21**

**20. Which of the following is a real number?**

A) 2i

B) √-9

C) 1/2

D) 5

**Answer: D) 5**

**21. Which of the following is a prime number?**

A) 4

B) 5

C) 10

D) 15

**Answer: B) 5**

**22. Which of the following is a complex number?**

A) 5

B) -2

C) 4i

D) √3

**Answer: C) 4i**

**23. Which of the following is a rational number?**

A) π

B) √7

C) -3/4

D) e

**Answer: C) -3/4**

**24. Which of the following is a natural number?**

A) 2.5

B) 0

C) -5

D) 7

**Answer: D) 7**

**25. Which of the following is a perfect cube?**

A) 27

B) 32

C) 36

D) 40

**Answer: A) 27**

**26. Which of the following is a whole number?**

A) -1/2

B) 0

C) √2

D) 1

**Answer: D) 1**

**27. Which of the following is a prime factorization of 72?**

A) 2 × 2 × 2 × 3 × 3

B) 2 × 3 × 3 × 4

C) 3 × 3 × 3 × 2

D) 2 × 2 × 3 × 6

**Answer: A) 2 × 2 × 2 × 3 × 3**

**28. Which of the following is a non-negative integer?**

A) -5

B) 0

C) 2

D) √2

**Answer: B) 0**

**29. Which of the following is a composite number?**

A) 1

B) 2

C) 3

D) 4

**Answer: D) 4**

**30. Which of the following is an irrational number?**

A) -1/2

B) √7

C) 1/3

D) 5/6

**Answer: B) √7**