Question # 1

If the roots of ax²+ bx + c = 0 (a > 0) be greater than unity, then

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a + b + c = 0

a + b + c > 0

a + b + c < 0

None of these

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The transpose of a zero matrix is a ______

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Column matrix

Zero matrix

Row matrix

Scalar matrix

At a point 15 meters away from the base of a 15 meters high house, the angle of elevation of the top is

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90°

60°

30°

45°

If sin A = cos A, 0°<A<90° then A is equal to

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1

1/2

0

None of these

The ratio in which the line y- x+ 2 =0 divides the line joining (3,-1) and (8,9) is

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2:3

-2:3

3:2

-3:2

The set (Z, +) forms a group

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Forms a group w.r.t addition

Forms a group w.r.t multiplication

Non commutative group w.r.t multiplication

Doesn't form a group

An infinite arithmetic series is always

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Convergent

Oscillatory

Divergent

None of these

Second derivative of y = x⁹+ 10x²+ 2x - 1 at x = 0 is

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10

20

12

1

If n is not natural number, then the expansion (1 + x)ⁿis valid for

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A box contains 10 red 30 white and 20 black marbles When a marble is drawn at random the probability that it is either red or white is

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1/6

1/3

1/2

2/3

If we have a statement "if p then q" then q is called

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Conclusion

Implication

Unknown

Hypothesis

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

Φset is the ______ of all sets?

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Subset

Union

Universal

Intersection

The span of a standard parabola depends upon

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x

a

y

y2

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 equation of the circle wit (-1, 1) and radius 2 is

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For two vector a and b, a+b = _______

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a b

b+a

b-a

None

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none of these

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28 / 81

28 / 243

81 / 28

243 / 82

i³ =

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-1

i

-i

1

The two lines y = 2x and x =2y are

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Parallel

Perpendicular

Equally inclined with axes

Congruent

If five triangles are constructed having sides of the lengths indicated below, the triangle that will NOT be a right triangle is

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8, 15, 17

3, 4, 5

12, 15, 18

5, 12, 13

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2

4

3

16

The centre of the circle x2+y2 -2fx-2gy+x=0 is

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(-g,-f)

(g,f)

(f,g)

(-f,-g)

θ and 2kπ+θ are the ________ angles

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Quadrantal angles

Coterminal

Allied

None

The cube roots of 8 are

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N

r

2r

π

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The value of sin^-1 5/13 is equal to

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Cos 5/13

Tan^-1 5/12

cos^-15/12

2 cos^-14/5

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