| 1 |
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| 2 |
The real part of the complex number a + bi is: |
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| 3 |
Division of a natural number by another natural number gives: |
- A. always a natural number
- B. always an integer
- C. always a rationalnumber
- D. always an irrational number
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| 4 |
If z<sub>1</sub> = 4i and z<sub>2</sub> = 3 - 9i, then z<sub>1</sub> + z<sub>2</sub> = |
- A. 3 - 5i
- B. 3i - 5
- C. 7 - 9i
- D. 3 + 5i
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| 5 |
π, e are: |
- A. integers
- B. natural numbers
- C. rationalnumbers
- D. irrationalnumbers
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| 6 |
The imaginary part of the complex number a + bi is: |
- A. a
- B. b
- C. bi
- D. none of these
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| 7 |
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| 8 |
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
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| 9 |
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- A. real numbers
- B. complexnumbers
- C. primenumbers
- D. oddnumbers
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| 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
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