Question # 1

Roots of the equation x²+ 7x + 12 = 0 are

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{3, -4}

{-3, 4}

{3, 4}

{-3, -4}

The product of the four fourth roots of unity is

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0

1

-1

None of these

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1

-1

0

I

If D = {a} , the P(D) =

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{a}

∅

{∅,{a}}

{∅,a}

The expansion of (1 + 2x)^-2is valed if

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| x | < 1/2

| x | < 1

| x | < 2

| x | < 3

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The line through the focus and perpendicular to the directrix is called ______ of the parabola

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axis

focal chord

tangent

latus rectum

Domain of cosecθis

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The order of the matrix A is 3 x 5 and that of B is 2 x 3.The order of the matrix BA is

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2 x 3

3 x 2

2 x 5

5 x 2

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The angle of depression of a point A on the ground from the top of the tower is 30𝜊,then the angle of elevation of the top of the tower at the point A is

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60𝜊

40𝜊

41𝜊

30𝜊

The negative square root of 9 can be written as:

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-√9

√9

√18

-√18

The behavior of trigonometric function is called

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Continuity

Discontinuity

Periodicity

Smoothness

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1

0

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Trichotomy property

Additive property of inequality

Transitive property

Multiplicative property

Two circles x2 +y2 +8x -9= 0 and x2+y2+6y +k =0 touchinternallyif the value of k is

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k = 9

k = ±9

k=-9

k=11

If x+y+z+......+2n = 2n+1-1∀n∈W,then cube root of xyz is equal to

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1

4

2

8

A dice is rolled. The probability that the dots on the top are greater than 4 is

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1/6

1/3

1/2

1

The sum of co-efficient in (1+x-3x²)⁴¹⁶³is

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0

1

-1

None

For three consecutive terms in A.P middle term is called

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A.M

nth term

Central term

None of these

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No solution

One real solution

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Not effect

Change the sign

Become zero

Not defined

0.25 is ______

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An irrational number

A natural number

A prime number

A rational number

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1

-1

99th term of the series 2 + 7 + 14 + 23 + 34 + ..... is

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9998

9999

10000

None of these

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Two real roots

Two positive roots

Two negative roots

One positive and one negative root

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1

12

5

29

If (0,4) and (0,2) are vertex and focus of the parabola respectively, the the equation of the parabola is:

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x² = 4y -32

x² =8y -32

y³ = 16 x

x2 + 8y =32

Through how many radians does the minute hand of a clock turn in one hour

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The roots of the equation ax²+ bx + c = 0 are complex/imaginary if

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b²- 4ac < 0

b²- 4ac = 0

b²- 4ac > 0

None of these

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