Question # 1

If n is any positive integer then n! > n²for

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x³⁹

40x³⁹

40x⁴¹

none of these

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If a2 = b2 then

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a = b

a+b= 1

|a+b| =0

None

The set {1,-1, i, -i} form a group under

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Addition

Multiplication

Subtraction

None

If the roots of 3x2+kx + 12 = 0 are equal then k = ______

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(A∩Bc)c= -------------------------

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Ac∪Bc

Ac∪B

Ac∩B

None of these

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

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12

8

24

-24

If x is an image of y under the function f. This can be written as

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y = f(x)

f(x) = 0

x = f(y)

f(y) =0

s > t then

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(s - t)²> (t - s)²

(s - t)²< (t - s)²

(s - t)²= (t - s)²

None

In R, the multiplicative inverse of a is

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0

1

-a

1/a

A class contains nine boys and three girls, in how many ways can the teacher choose a committee of four?

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460

495

272

60

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2 and 9

3 and 2

2/3 and 9

3/2 and 6

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cos 2x

2 cos 2x

2 sin2x

-2 cos2x

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sec x tan x

-cosec x cot x

sec²x

-sin x

A diagonal matrix in which the diagonal elements are equal is called a

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Null matrix

Identity matrix

Scalar matrix

Row matrix

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

If A is a subset of B and B contains at least one element which is not an element of A, then A is said to be

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Improper subset of B

Super set of B

Proper subset of B

None of these

If the terminal rays of an angle falls on any axis then the angle is called

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Allied angle

Acute angle

Standard position

Quadrantal angle

The conic is a parabola, when:

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ᵨ > 1

ᵨ < 1

ᵨ = 1

ᵨ = 0

In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

3/2 is

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An irrational number

Whole number

A positive integer

A rational number

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2.333....is a

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Irrational no

Complex no

Rational no

None of these

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Name the property used in 1000 x 1 = 1000

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additive inverse

multiplicative inverse

additive identity

multiplicative identity

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100

99

0

none of these

u,v,wand u x (v.w) are

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Equal

Parallel

Additive immense of each other

Meaningless

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