Question # 1

Which matrix is said to be additive identity of any matrix:

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scalar matrix

diagonal matrix

zero matrix

unit matrix

A father's age 4 times of his son's age. If the age of son is 20 year's, then the age of father is:

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60

80

100

40

A father's age 4 times of his son's age. if the age of son is 20 year's then the age of father is:

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60

80

100

40

Circles in the same plane with same center and different radii are called:

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concentric circles

semi circles

equal circles

concyclic circles

Which of the following is a proper rational expression?

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2x3 + 3x2 +3/x2 + x + 3

3x2 + 4x + 5/ 2x^4+ 1

x3 +8/x + 1

2√x+3/2√x-3

The lowest term of 8x2y2/12xy5 is:

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2x2/3y3

3x3/2y2

3x2/2y3

4c2/9y3

The symbol ">" stand for:

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greater than

less than

less than or equal to

greater than and equal to

Medians to the equal sides of an isosceles triangle are:

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congruent

equal

similar

unequal

The volume of a sphere is:

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πr²h

1/3πr²h

4/3πr²h

πr²

Root which are not the solution of the original equation but they are obtained in the solution are called:

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Real roots

extraneous roots

constants

variable solvents

If the sum of two angles is 90° then the angles are called:

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supplement of each other

complement of each other

inverse of each other

reflex of each other

If the points of contact of a common tangent to the two circles are on the same side of the line joining their centers, then this common tangent is called:

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external tangent

internal tangent

concyclic tangent

concentric tangent

A parallelogram containing a right angle is called a:

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quadrilateral

square

rectangle

equilateral

A parallelogram containing a right angle is called a:

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quadrilateral

square

rectangle

equilateral

Factorization of x3 -6x2 + 12x -x is:

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(x +2)3

(x-2)3

x3 +23

x3- 23

IF At = -A then matrix A is called a:

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symmetric matrix

skew - symmetric matrix

transpose of matrix

identity matrix

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