Question # 1

In R, the additive identity is

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0

1

-1

None

i^-(4n+2)= -------------------------------

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1

i

-1

-i

Roots of the equation 9x²- 12x + 4 = 0 are

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Real and equal

Real and distinct

Complex

None of these

The transport of a null matrix is

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Row matrix

Column matrix

Square matrix

Null matrix

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The span of a standard parabola depends upon

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x

a

y

y2

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(a^-1)^-1=

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a^-1

a

-a

None of above

(√3+√5)+√7 = √3 +(√5 +√7) property used in above is

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Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t to adition

Two cards are drawn at random without replacement. the probability that the first is a king and second is not a king is

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48 / 663

24 / 663

12 / 663

None of these

If x + y + 1 = 0 touches the parabola y²=λx, thenλis equal to

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2

4

6

8

If A is any matrix then its additive inverse is

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A

A^-1

A^t

-A

The obtuse angle between lines = -2 and y = x +2 is

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120°

135°

150°

140°

If f(x)= x³ then f(-2) is

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-2

-4

-8

8

120°=______

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Co-ordinate of a point on the parabola y² = 8x whose focal distance is 4 are:

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(2 , 4)

(-2 ,-4)

(-2, 4)

(2,-4)

A fraction in which the degree of the numerator is greater than or equal to the degree of the denominator is called

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A proper fraction

An improper fraction

An equation

An identity

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2 b

2 a

2 ab

a + b

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The number of different ways of describing a set is

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One

Two

Three

Four

If for two events A and B , P(A∪B)=1,then events A and B are

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Certain events

Mutually exclusive

Complementary events

Independent

The set X is

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Proper Subset of X

Not A subset of X

Improper Subset of X

None of these

The coefficient of xn in the expansion of (1-x)-1 is

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(-1)n2n

1

(-1)n(n+1)

(n+1)

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36

360

24

6

The maximum value of 12 sinθ-9 sin²θis x

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3

4

5

None of these

The curve f(x,y) = 0 has a central symmetry if

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f(-x,-y)=f(x,y)

f(x,-y)=f(x,y)

f(-x,y)=f(x,y)

f(-x,-y)≠f(x,y)

The point ________ is in the solution of the inequality 4x - 3y < 2

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(0,1)

(2,1)

(2,2)

(3,3)

The complement of set A relative to universal set U is the set

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The condition for ax2 + bx c to be expressed as the product of linear polynomials is

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b4 - 4ac =0

b4- 4ac ≥0

b4- 4ac <0

b4= 4ac

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cos x

sec x tan x

sec²x

-cosec²x

Domain of 1+cot2θ=csc2θ is

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[0,π]

R-{x/x=nπ,n∈ z}

(-∞,+∞)

[-1,1]

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