Question # 1

The multiplicative inverse of x such that x = 0 is

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-x

Does not exist

1/x

±1

The distance of the plane 2x - 3y + 6z + 14 = 0 from the origin is

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14

2

-2

11

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A fraction in which the degree of the numerator is less than the degree of the denominator is called

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Polynomial

Equation

Proper fraction

Improper fraction

The probability to get an odd number in a dice thrown once is

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6

1

1/6

1/2

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The number of subset of {0} is

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1

2

3

None

The square root of 2i - 20i is

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+-(5 - 2i)

+-(5 + 2i)

(5 - 2i)

None of these

The roots of ax2 + bx + c = 0 are always unequal if

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b2 - 4ac = 0

b2- 4ac ≠ 0

b2- 4ac > 0

b2- 4ac ≥ 0

If 2 tan¹(cos x) = tan^-1(cosec²x), then x is equal to

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π/ 3

π/ 2

π/ 6

π

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none of these

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none of these

A square matrix A = [aij] is lower triangular matrix when

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aij = 0 for all i<j

bij = 0

cij = 0

dij = 0

What is the period of 6 sin x=?

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π

-π

π/2

2π

If A = [a_ij] is (m x n) matrix, then transpose of A is of the order

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m x m

m x n

n x n

n x m

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A bag contains 7 whit, 5 black and 4 rd balls. If two balls are drawn at random from the bag, the probability that they are not of the same color is

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73 / 120

83 / 120

67 / 120

43 / 120

The graph of y> 0 is the upper - half of:

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y-axis

x-axis

1st and 4th quandrant

2nd and 3rd quadrant

The measure of the acute angle between the lines represented by x2 -xy -6y2 =0 is

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120°

30°

130°

45°

A Series which does not coverage to a Unique sum is called

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Harmonic Series

Oscillatroy Series

Arithmetic Series

None of these

The solution set of the inequality ax + by < c is

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straight line

half plane

parabola

none of these

sin (α+β) + sin (α-β)

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2 sinαcosβ

sin (2αβ)

sinαcosα

None of these

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sin(π/2+θ) = _______;

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sinθ

cosθ

-sinθ

-cosθ

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If f(x) = -x³then f(-2) is

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-2

-4

-8

8

1 radian = ______

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180°

90°

57.296°

60°

The length of the tangent from (2, 1) to the circle x²+ y²+ 4y + 3 = 0 is

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What is the conjugate of -6 -i?

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-6 +i

6+i

-6 -i

6 -i

We solve the system of non-homogeneous linear equations by

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a and b

b and c

c and a

a,b and c

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