Question # 1

A set having only one element is called

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An empty set

Universal set

A singleton set

A power set

A square matrix A for which A^t= -A is called a

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Column matrix

Symmetric matrix

Skew-symmetric matrix

Row matrix

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There are ______ types of rational fraction

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Three

Four

Five

Two

i is equal

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(1 , 0)

(0 , 1)

(1 , 1)

(0 , 0)

What is the conjugate of -7 -2i ?

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-7 + 2i

7 +2i

7 -2i

√53

The property used in -3 <-2 ⇒0 <1

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Commutative property

Additive property of inequality

Additive inverse

Additive identity

The key for opening a door is in a bunch of 10 keys. A man attempts to open the door by trying the keys at random discarding the wrong key. The probability that the door is opened in the 5th trial is

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1 / 10

2 / 10

3 / 10

4 / 10

If x < y, 2x = A, and 2y = B, then

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A = B

A < B

A < x

B < y

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none of these

For a square matrix A, if A = A^t, then A is called

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matrix

Transpose

Symmetric

Non-symmetric

If (0, 0) and (-1, 0) are end points of a diameter, then the equation of the circle is

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The equation of the parabola with directirx x = 2 and the axis y = 0 is

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y²= 8x

y²= -8x

y²= 4x

y²= -4x

If 2x +y + λ =0 is normal to parabola y2 =-8x,λ= _____

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12

8

24

-24

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none of these

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If b²- 4ac is positive then the roots of the equation are

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Real

Imaginary

Positive

Negative

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120

5

4

6

Which one is not defined∀n∈Z+

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-n!

n!

(-n)!

n!+0!=n!+1

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sin h x

cos h x

sec h x

cosec h x

Express the perimeter P of square as a function of its area A?

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P = 4√A

P =√A

P = 2A

P =π√A

Sin 90° = ______

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-1

0

1

Undefined

The 60th part of one minute is called

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Degree

Second

Radiam

None of these

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Natural numbers

Whole numbers

Integers

Rational numbers

The domain of a finite sequence is a

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Set of natural numbers

R

Subset of N

Proper subset of N

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

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0

1

2

4

cos(a +β)-cos(a-β) = _______;

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2cosa cosβ

2sina cosβ

-25 in a cosβ

-2sin a sinβ

Associative law of multiplication

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ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

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