Rational numbers MCQs Quiz Multiple Choice Questions & Answers

1. -(-x) is same as

1. x
2. 1/x
3. -1/x
4. -x

2. A number of the form p/q is said to be a rational number if

1. p and q are integers and p is not qual to zero.
2. p and q are integers and q is not qual to zero.
3. p and q are integers and p and q both are not equal to zero.
4. p and q are integers

3. Addition is associative for

1. Whole Numbers
2. Rational Numbers
3. All of these
4. Natural numbers

4. Between any two rational numbers, there lie:

1. No rational number
2. infinite rational numbers
3. infinite fractions
4. two rational number

5. If x be any rational number, than x+0 is

1. -x
2. Not defined
3. x

6. If y be the reciprocal of rational number x, then the reciprocal of y will be

1. y
2. x/y
3. y/x
4. x

7. One (1) is

1. the identity for subtraction of the rational number
2. the identity for multiplication of the rational number
3. the identity for division of the rational number
4. the identity for addition of the rational number

8. Rational numbers are not closed under

1. Division
2. Addition
3. Multiplication
4. Subtraction

9. The additive inverse of a/b is

1. b/a
2. a/b
3. -a/b
4. -b/a

10. The reciprocal of 0 is

1. -1
2. Not defined
3. 1

11. The reciprocal of 1 is

1. -1
2. Not defined
3. 1

12. The reciprocal of -1 is

1. -1
2. Not defined
3. 1

13. The reciprocal of a negative rational number

1. is a negative rational number
2. can be either a positive or a negative rational number
3. does not exist
4. is a positive rational number

14. The sum of -3/2 and 1/2 is

1. -2
2. 4
3. 3
4. -1

15. The value of (-4/3) - (-1/3) is

1. -3
2. 2
3. -1
4. -2

16. There are ........... number of rational numbers between two rational numbers

1. Unlimited
2. 1
3. 2
4. Zero

17. What number is equivlant to -2/3

1. -3/6
2. -4/-6
3. -4/6
4. 2/3

18. Which of the following rational numbers is equivalent to 2/3?

1. 4/9
2. 4/6
3. 9/4
4. 3/2

19. Which of the following is neither appositive nor a negative rational number?

1. Such a rational number doesnt exist
2. Zero
3. 1

20. Which of the following is not true?

1. rational number are closed under subtraction
2. rational number are closed under multiplication
3. rational number are closed under division
4. rational number are closed under addition

21. Which of the following is the identity element?

1. -1
2. Zero
3. 1

22. Which of the following is the Multiplicative identity for rational numbers?

1. -1
2. zero
3. 1

23. Which of the following rational numbers is in standard form?

1. 10/4
2. 1/2
3. 1/-3
4. 20/30

24. Zero (0) is

1. the identity for subtraction of the rational number
2. the identity for multiplication of the rational number
3. the identity for division of the rational number
4. the identity for addition of the rational number