Question # 1

M^-1=

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-M

AdjM

Let A,B,C be three matrices, then A(B+C) = AB + AC is known as:

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Cumulative property w.r.to '+'

Associative property w.r.t '+'

Left distributive law

Right distributive law

Pythagoras a ____________ philosopher and mathematician:

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American

British

Greek

German

Logarithms with base 10 are known as:

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Natural logarithms

Commonlogarithms

Both a and b

None of these

H.C.F of x-2 and x²+x-6 is _______:

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x²+x-6

x+3

x-2

x+2

If the three altitudes of a triangle are congruent, then the triangle is ______:

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Equilateral

Right angled

Isosceles

Acute angled

Diagonals of a parallelogram do ______ of each other;

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Bisection

Trisection

None of these

If a²+b²<c²then triangle is:

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Acute

Obtuse

Right

Scalene

Two sides of a triangle measure 10 cm and 15 cm, which of the following measure is possible for the third side:

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5cm

20cm

25cm

30cm

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M

O

-M

I

In ab + ac = a(b+c) then a and b + c are__________ of ab + ac:

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Functions

Member

Elements

Factors

The standard form of quadratic equation is:

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x²+6=7x

x²-7x=6

7x+6=x²

x²-7x+6=0

90 degree makes ______ right angle:

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2

4

1

3

If 't' is the radius of a circle, then its circumferienc is.

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π/2r

πr

2πr

4πr

A collection of well-defined distinct objects is called.

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subset

Power set

Set

None of these

The mean of the squared deviations of x_i (i = 1, 2, -----------------,n) observations form their arithmetic mean is called:

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Variance

Standard deviation

Range

The set {x} x∈ A and x∉ B } is.......................

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A∪ B

A∩ B

A - B

B - A

How many common tangents can be drawn for two disjoint circles ?

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2

3

4

In a set of data, the difference between highest value and lowest value is called:

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Standard deriation

Range

Dispersion

All of these

The measure of central tendency which is not affected by extreme values is called:

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Median

Arithmetic mean

Geometric mean

None of these

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A proper fraction

An improper fraction

An identity

An constant term

In a set of data 63,65,66,67,69, median is:

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63

66

67

69

In a simultaneous throw of two dice, The probability of getting a total of 7 is:

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scalarmatrix

diagonalmatrix

lower triangularmatrix

uppertriangularmatrix

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none of these

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When two sides and included angle is given, then area of triangle is given by:

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all of these

The number of ways in which fiver persons can sit at a round table is:

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4!

5!

none of these

The series 2 + 2 + 2 ..... is:

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divergent

convergent

oscillatory

none of these

The roots of the equation:

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complex

irrational

rational

none of these

The period of sec x is:

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The area A of a circle as a function of its circumference C is:

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0

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a

2b

b

2a

x = 4 is the solution of inequality:

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x + 3 > 0

x - 3 < 0

-2x + 3 > 0

x + 3 < 0

The inequality x < a is the open half plane to the __________ of the boundary line x = a:

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Above

Left

Below

Right

The graph of the parabola y² = -4ax lies in quadrants:

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I and II

III and IV

II and III

I and III

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2

1

If (2, 1) is the mid point of the line segment joining the points (2, x) & (2, -5) then x =

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1

2

7

-7

If the directed distances AP and PB have same signs, then their ratio is positive and P is said to divide AB:

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Internally

May be divide

Externally

None of these