| 1 |
Factors of x<sup>2</sup> + y<sup>2</sup> are: |
- A. (x + iy) (x - iy)
- B. (x + y) (x - y)
- C. (x + y) (x + y)
- D. none
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| 2 |
π is defined as: |
- A. ration of diameter of a circle to its circumference
- B. ration of the circumference of a circle to its diameter
- C. ration of area of a circle to its circumference
- D. ration of the circumference of a circle to its area
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| 3 |
Rational numbers are: |
- A. repeating decimals
- B. terminatingdecimals
- C. periodicdecimals
- D. all of these
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| 4 |
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- A. additive property
- B. multiplicative inverseproperty
- C. transitive property
- D. negative property
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| 5 |
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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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| 6 |
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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| 7 |
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- A. rational number
- B. irrational number
- C. natural number
- D. whole number
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| 8 |
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
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| 9 |
The real part of the complex number a + bi is: |
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| 10 |
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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