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