Question # 1

If one root of the equation ix²- 2(i + 1) x +(2 - i) = 0 is 2 - i, then the other root is

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-i

2 + i

i

2 - i

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A

B

U

None of these

In triangle ABC, in which b=95, c=34, a =52^𝜊then the value of a=

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18 cm

18.027 cm

20.7 cm

19 cm

A die is thrown 100 times. If getting an odd number is considered a success, the variance of the number of successes is

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50

25

10

100

Rational number is a number which can be written as a terminating decimal fraction or a

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Non-terminating decimal fraction

Non-recurring

Recurring decimal fraction

a, b and c

Tan 180° = ______

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-1

0

1

Undefined

Which of the following is a factor of x³- 3x²+ 2x - 6

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x + 2

x + 3

x - 3

x - 4

The eccentricity of the conic 9x²- 16y²= 144 is

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4/5

5/4

4/3

3/4

Period of cosec x is ______

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The ellipse and hyperbola are called

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Concentric conics

Central conics

Both a b

None

A function in which the variable appears as exponent is called:

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An identity function

A logarithmic function

an exponential function

A rational function

An indicated sum of terms of a sequence is represented by

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Sn

an

S(n)

{Sn}

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2

1

5

0

Period of Sine and Cosine function is

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π

2π

-π

-2π

The set {1,-1,i,-i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

The range of the tangent function is

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all real numbers

-1 ≤ x ≥ 1

natural number

z⁺

What is the period of 5 cot x=?

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π

-π

π/2

2π

If a₁= a₂= 2, a_n= a_n-1- 1 (n > 2), then a₅is

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1

0

-1

-2

If x,y are two -ve distinct numbers then

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A>G>H

A<G<H

A=G=H

None of these

System of linear equations is inconsistent if

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System has no solution

System has one solution

System has two solution

None of above

The general term of a sequence is denoted by

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a₁

a_n

n

s_n

If f (x) = 2x+1 then fof (x) = _______;

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4x+3

2x +3

4x +1

None of these

y=0 of the parabola y² = 4ax is the

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equation of directirx

Equatio of the tangent

Equation of axis

equation of latus rectum

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6

360

120

24

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The sum of first twenty odd integers in A.P is

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400

397

404

408

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1

1/2

0

None

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The parabola y2 + 2y + x = 0 lie in _____ quadrant.

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First

Second

Third

Fourth

22.5°=______

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The proposition S(k+1) is true when ______ is true∀K∈N

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S(n)

S(k)

S(1)

S(k-1)

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