Question # 1

In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

csc(-π/2) = __________;

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0

1

-1

Undefined

The5thand 13th terms of an A.P are 5 and-3 respectively The first term of the A.P is

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1

-15

9

2

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0

1

-1

2

The value of sin-1 24/25 is equal to

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csc-1 25/24

sec-1 24/25

2 tan-1 4/5

2cos-1 24/25

Every natural number is

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A prime number

An irrational number

An integer

An even number

If a2 = b2 then

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a = b

a+b= 1

|a+b| =0

None

sin(π/2+θ) = _______;

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sinθ

cosθ

-sinθ

-cosθ

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Which term of the A.P 5,8,11,24.............is 320

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104th

106th

105th

64th

For two events A and B if P(A) = P (A/B) = 1/4 and P(B/A) = 1/2, then

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A is sub-event of B

A and B are mutually exclusive

A and B are independent and P(A/B) = 3/4

None of these

The matrix A is Hermitian when (A)' =

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A

-A

A

A'

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π is the ration of

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Area of a circle to its diameter

Area of a circle to its radius

Circumference of a circle to its diameter

Circumference of circle to its radius

If the exponent in the binomial expansion is 6, then the middle term is

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2nd

3rd

4th

5th

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Square matrix

Row matrix

Symmetric matrix

Null matrix

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2s²

2s³

s³

3s³

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The line y = 4x + c touches the hyperbola x²- y²= 1 if

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Latus rectum = 4 x ______________

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focal distance of the vertex

Chord

Focus

1/2

The set { {a,b} } is

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Infinite set

Singleton set

Two points set

Empty set

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A

A'

U

If two balls are drawn from a bag containing 3 white, 4 black and 5 red balls. Then the probability that the drawn balls are of different colours is

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1 / 66

3 / 66

19 / 66

47 / 66

A diagonal matrix in which the diagonal elements are equal is called a

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Null matrix

Identity matrix

Scalar matrix

Row matrix

A = [3] is a/an

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Square matrix

Scalar matrix

Diagonal matrix

Identity matrix

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I

|A|

|A| I

None of these

In one hour, the hour hand of a clock turns through

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The equation of the circle with centre (5, -2) and radius 4 is

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(x-5)²+ (y+2)²= 16

(x-5)²+ (y+2)²= 4

(x-5)²+ (y-2)²= 16

(x-5)²+ (y-2)²= 4

The quadratic equation 8 sec2θ - 6 secθ +1 =0 has

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Infinitely many roots

Exactly two roots

Exactly four roots

No roots

∛8.6 is approximately equal to

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2.488

2.48

2.0488

2.05

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