Question # 1

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The set of complex numbers forms

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Commutative group w.r.t addition

Commutative group w.r.t multiplication

Commutative group w.r.t division

Non commutative group w.r.t addition

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Zero matrix

Diagonal matrix

Column matrix

Scalar matrix

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sin 2x + c

-sin 2x + c

What is the axis of the parabola y²= 4ax?

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x = 0

y = 0

x = a

y = 0

Ifᵨ> 1 , then the conic, is:

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Ellipse

Parabola

Hyperbola

None of these

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Range of 2 tan x is ______

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[-2, 2]

-1 < x < 1

R

None of these

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If circumference of circle is divided into 360 congruent parts the angle subtended by one part at the centre of circle is

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1 degree

1 second

1 minute

1 radian

The first three terms in the expansion of (1 - x)^-2are

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1 - 2x + 3x²

1 - 2x - 3x²

1 + 2x + 3x²

-2 - 2x +3x²

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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none of these

The velocity and acceleration at any point t of a particle which moves along straight line x = 5r-3

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5,3

5,-3

5,0

10,0

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-10

10/7

-10/7

-7/10

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3

6

0

None of these

The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is

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32

16

18

8

sin(a + β)+sin(a -β) =_____;

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2cosa cosβ

2sina cosβ

2cosa sinβ

-2sina sinβ

a + x is ______

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A trinomial

A binomial

A monomial

None of these

When we expand (a + 2b)⁵then

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a⁵+ 10a⁴b + 40a³b²+ 80a²b³+ 80ab⁴+ 32b⁵

a⁵+ a⁴b + a³b²+ a²b³+ ab⁴+ b⁵

5a⁵+ 4a⁴b + 3a³b²+ 2a²b³+ 1 ab⁴+ b⁵

None

Sin 270° = ______

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-1

0

1

Undefined

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-2x³

2x^-3

-2x^-3

2x³

The number of subsets of a set having three elements is

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4

6

8

none of these

The angle of elevation of the top of a tree from a point 17 meters from is foot is 42^𝜊The height of the tree is

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12m

21m

17m

15m

The centroid of a triangle divides each median in the ratio

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2 : 1

3 : 1

3 : 2

1 : 1

In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

Period of sec x is ______

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The angle of elevation of a tower from a point A due south of it is x and from a point B due east of A is y. If AB = 1, then the height h of the tower is given by

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f(x) = 1 is

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identity function

constant function

linear function

quadratic function

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