Question # 1

The value of x, and y, when (x + iy)²= 5 + 4i

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X = 2, y = -1

X = -2, y = 1

X = 2, y = -1

X = 2, y = 2

If the 19th term of A.P is 8 and the 4th term is 20, then the first term is

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20.2

25.5

27.5

37.5

If A = (3, 8) and B = (5, 6), then the distance between A and B is

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2

1

6

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Complex roots of real quadratic equation occur in

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Conjugate pair

ordered pair

reciprocal pair

quadratic function

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(0, e)

(0, 1)

None

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None

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If A and B are matrices such that AB=BA=I then

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A and B are multiplicative inverse of each other

A and B are additive inverses of each other

. A and B are singular matrices

A and B are equal

An angle of one radian is equivalent to

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90°

60°

67°

57° 18^'

A vector of magnitude zero is called

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Position vector

Null vector

Free vector

None of these

The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

If a statement S(n) is true for n = 1 and the truth of S(n) for n + K implies the truth of S(n) for S(n) = K + 1, then S(n) true for all

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All Real numbers

All integers

Positive integers

All complex numbers

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None of these

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a + x is

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A trinomial

A binomial

A moomial

An equation

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