Question # 1

x²+ x - 5 = 0 is

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A polynomial

An inequality

An identity

None

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The square root of every incomplete square is an

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Rational numbers

Even numbers

odd numbers

Irrational numbers

If the sum of even coefficients in the expansion of (1+x)n is 128 then

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n=7

n=9

n=8

None

A matrix in which the number of rows is not equal to the number of columns is called a

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Diagonal matrix

Rectangular matrix

Square matrix

Scalar matrix

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One-to-one and onto

One-to-one but not on to

Onto but not one-to-one

Neither one-to-one nor onto

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

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Addition

Multiplication

Subtraction

None

s > t then

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(s - t)²> (t - s)²

(s - t)²< (t - s)²

(s - t)²= (t - s)²

None

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Name the property used in 4 + 9 = 9 + 4

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

If (a, b) is the mid-point of a chord passing thro' the vertex of the parabola y²= 4x, then

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a = 2b

2a = b

a²= 2b

2a = b²

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

24 can be written as a product of

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Odd factors

Even factors

Whole factors

Prime factors

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A prime number

An integer

A whole number

An irrational number

If B-A≠φ , then n(B-A) is equal to

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n(a)+n(c)

n(c)-n(a)

n(a)-n(c)

None of these

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1

-1

-1/2

1/2

3x + 4 > 0 is

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equation

inequality

identity

none of these

The exponent of x in 10th term in the expansion of (a+x)n

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10

12

11

9

In-radius is denoted by

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r

η

r2

R

The point of concurrency of the medians of the ΔABC is called its

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Orthocenter

Centriod

Circumcentre

Incentre

The solution set of the inequality ax + by < c is

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straight line

half plane

parabola

none of these

E-radius corresponding to < B is

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{1, 2, 3} is _____

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an infinite set

A finite set

A singleton set

Universal set

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2²- n - 1

1 - 2^-n

n + 2^-n-1

2ⁿ- 1

sin(3π/2 -θ)=_______;

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sinθ

cosθ

-sinθ

-cosθ

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

The geometrical representation of a linear function is

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Circle

Parabola

Straight lie

None of these

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The area enclosed between the graph y = x²-4x and the x- axis is:

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20/3

41/3

32/3

25/3

The total number of subsets that can be formed out of the set {a, b, c} is

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1

4

8

12

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