Question # 1

The set {1,-1, i, -i} form a group under

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Addition

Multiplication

Subtraction

None

If f(x)= x³ then f(-2) is

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-2

-4

-8

8

tan (-135°) = ______θ

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0

1

2

3

If nis positive integers, then 2ⁿ>2n+1, only when

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n≤ 3

n≥ 3

n≤ 2

n≤ 1

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A natural number

A rational number

An irrational number

A whole number

The term involving x⁴in the expansion of (3 - 2x)⁷is

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120

1512

1250

15120

sin^-1[-1/2] = ______

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360°

180°

90°

None of these

The condition for ax2 + bx c to be expressed as the product of linear polynomials is

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b4 - 4ac =0

b4- 4ac ≥0

b4- 4ac <0

b4= 4ac

64.A point (x, y, z) moves parallel to xy plane. Which of the three variables x, y, z remain fixed?

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z

x

y

x and y

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l²+ m²+ n²= 0

l²- m²+ n²= 1

l²+ m²+ n²= 1

l²+ m²- n²= 0

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-2x cos x²

-2x²sin x²

-x²sin x

-2x²sin x²

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Rank of matrix [1 3 5 0] is

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1

3

2

4

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c = 0

c = -1

c = -2

c = 1

A quadratic equation has two

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roots

degree

variables

constants

cos^-1(cos x) =

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x

cos x

x = 1/x

cos^-2 x

The constant distance of all points of the circle from its centre is called the

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Radius of the circle

Secant of the circle

Chord of the circle

Diameter of the circle

Order (or sense) of an inequality is changed by multiplying or dividing its each side by a:

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Zero

one

negative constant

Non negative constant

Three integers are chosen at random from the first 20 integers. Then probability that their product is even, is

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2 / 19

3 / 29

17 / 19

4 / 19

sin(π+θ)=_______;

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sinθ

cosθ

-sinθ

-cosθ

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The number of words that can be formed out of the letters of the word ASSASSINATION is

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f(x) = 2x²+ 3x + 5 is a

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trigonometric function

algebraic function

exponential function

logarithmic function

Name the property used in a (b-c) = ab - ac

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commutative property of multiplication

distributive property of multiplication

associative property of multiplication

multiplicative inverse

Which of the following integrals can be evaluated

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The general term in the expansion of (a+x)n is

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(r-1)th term

(r+1)th term

rth term

none

The square matrix A is skew Hermitian when (A)'=

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A

A'

-A

A

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A

A'

U

None of these

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