| 1 |
Which of the following is correct: |
- A. 2 + 7i > 10 + i
- B. 1 + i > 1 - i
- C. 4 + 3i > 1 + 3i
- D. none of these
|
| 2 |
The set of negative integers is closed with respect to: |
- A. addition
- B. multiplication
- C. both (a) and (b)
- D. subtraction
|
| 3 |
The identity element with respect to addition is: |
- A. 0
- B. 1
- C. -1
- D. 0 and 1
|
| 4 |
|
- A. Additive property
- B. Multiplicativeproperty
- C. Reflexiveproperty
- D. Transitive property
|
| 5 |
Conjugate of complex number (-a, -b) is: |
- A. (-a, b)
- B. (-a, -b)
- C. (a, -b)
- D. none of these
|
| 6 |
|
- A. integer
- B. rationalnumber
- C. irrationalnumber
- D. naturalnumber
|
| 7 |
|
|
| 8 |
The multiplicative identity of real numbers is: |
|
| 9 |
If z = x + i y = r (cos Θ + i sin Θ), then arg z is: |
- A. tan Θ
- B. cos<sup>2</sup>Θ + sin<sup>2</sup>Θ
- C. r
- D. Θ
|
| 10 |
Product of a complex number and its conjugate is: |
- A. a real number
- B. irrationalnumber
- C. a complexnumber
- D. either real number or complexnumber
|