| 1 |
The imaginary part of the complex number a + bi is: |
- A. a
- B. b
- C. bi
- D. none of these
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| 2 |
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- A. rationalnumber
- B. irrationalnumber
- C. naturalnumber
- D. wholenumber
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| 3 |
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- A. z is purely real
- B. z is any complex number
- C. z is purely imaginary
- D. real part of z = imaginary part of z
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| 4 |
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- A. a + c = b + d
- B. a + b = c + d
- C. a - b = c - d
- D. None of these
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| 5 |
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- A. closureproperty
- B. associativeproperty
- C. commutativeproperty
- D. trichotomyproperty
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| 6 |
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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| 7 |
Conjugate of a + i b is: |
- A. -a + ib
- B. a + ib
- C. -a - ib
- D. a - ib
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| 8 |
Modulus of 15 i + 20 is: |
- A. 20
- B. 15
- C. 25
- D. none of the above
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| 9 |
The real part of the complex number a + bi is: |
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| 10 |
The ordered pairs (2, 5) and (5, 2) are: |
- A. not equal
- B. equal
- C. disjoint
- D. empty
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