Question # 1

Which of the following is a vector.

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work

time

density

electric field

A function in which the second elements of the order pairs are distinct is called

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Onto function

One-one function

Identity function

Inverse function

The point of concurrency of the medians of a triangle is called

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incentre

circumcentre

e-centre

centroid

If the focus lies on the y-axis with coordinates f(0,a) and directrix of the parabola is y = -a, the equation of parabola is:

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y² = -4 ax

x² = 4ay

x² = -4ay

y² = 4ax

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The coordinates of the point that divides the join of A(-6,3) and B(5, -2) in the ratio 2:3 internally

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The number of non zero rows in echelon form of a matrix is called

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Order of matrix

Rank of matrix

Row operation

None of these

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The law of of sines

The law of tangents

The law of consines

None of these

Which of the following is a quadrantal angle

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30°

45°

60°

90°

The coordinates of a point P(x,y) referred to XY-system are

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(x+y,y+k)

(x-h,y-k)

(x,y)

(x-h,y-k)

The transport of a null matrix is

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Row matrix

Column matrix

Square matrix

Null matrix

If A, G, H are the arithmetic, geometric and harmonic means between a and b respectively then A, G, H are in

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A. P.

G. P.

H. P.

None of these

If B⊆ A, then complement of B in A is = -----------------------

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A-B

A∩B

B-A

A∪B

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A = x, B = 1

A = 0, B = 2

A = -1, B = 1

A = x-1, B = x + 1

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

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Sin -1 x=

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sin(π/2-x)

Sin-1 (π/2-x)

π/2-cos-1x

π/2 + cos-1x

If A(a,b) lies on 3x +2y =13 and point B(b,a) lies on x-y =5 then equation of AB is

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x- y= 5

x+ y+ =5

x+ y= -5

5x +5y =21

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2

1

5

0

The series obtained by adding the terms of a geometric sequence is called

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Infinite series

Arithmetic series

Geometric series

Harmonic series

The last term of (1+2x)-2

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(-1)-2 (2x)-2

(-1)-4(-2x)-2

(-1)-3(2x)-3

Does not exist

The number of different ways of describing a set is

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One

Two

Three

Four

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0

1

undefined

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Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

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I

|A|

|A| I

None of these

(A ∩ B)c =

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A∩ B

(A ∪ B)c

Ac∪Bc

Φ

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

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associative property w.r.t addition

commutative property

Closure property w.r.t addition

Additive identity

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In(x²- x + 1) + c

In(2x - 1) + c

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