Question # 1

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{1, 2, 3}

{5, 6, 7}

{4}

If z = x + i y = r (cos Θ + i sin Θ), then arg z is:

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tan Θ

cos²Θ + sin²Θ

r

Θ

Conjugate of -3 -2 i is:

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3 + 2i

-3 + 2i

2 + 3i

-2 + 3i

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equal sets

null sets

overlapping sets

subsets

A clock strikes once when its hour hand is at one, twice when it is at two, and so on. How many times does the clock strike in ten hours ?

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55

78

66

46

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Complex roots of real quadratic equation always occur in:

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conjugate pair

ordered pair

reciprocal pair

none of these

(a+b) x = ax + bx is:

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Which one is not a quadrant angle ?

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0°

90°

280°

270°

The period of cos 2x is:

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i² + 1 =

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-1

0

i

1

The real part of the complex number a + bi is:

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b

-b

a

-a

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Period of a trigonometric function is:

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any real number

any negative real number

any integer

a least positive number

Solution set of the simultaneous equations : x + y = 1, x - y = 1 is:

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{(0,0)}

{(1,0)}

{(0,1)}

{(1,1)}

If the initial side of an angle is the positive x-axis and the vertex is at the origin, the angle is said to be in the _____________:

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initial position

finalposition

normalposition

standardposition

Solution set of the equation x² - 3x + 2 = 0 is

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{-1, 2}

{1, -2}

{-1, -2}

{1, 2}

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real numbers

complexnumbers

primenumbers

oddnumbers

If the matrices A & B have the orders 2×3 and 5×2 then order BA is:

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3×5

5×2

2×2

none

If sets A and B are equal then:

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