Question # 1

A function in which the second elements of the order pairs are distinct is called

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Onto function

One-one function

Identity function

Inverse function

Z is a

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Infinite set

Finite set

Singleton set

Set of all integers

If the roots of ax²- bx - c = 0 change by the same quantity, then the expression in a, b, c that does not change is

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w¹¹= ______

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0

1

w

w²

The polar form of complex number x ≠ I y =

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r cos θ+ r sin θ

r cos θ+ is sin θ

cos θ+ r sin θ

i cos θ+ i sin θ

Domain of 2 cos x is ______

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[-2, 2]

R

Negative real numbers

None of these

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none of these

The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is

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32

16

18

8

If the exponent in the binomial expansion is 6, then the middle term is

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2nd term

3rd term

4th term

5th term

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∛8.6 is approximately equal to

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2.488

2.48

2.0488

2.05

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The set {Z\{0}} is group w.r.t

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Addition

Multiplication

Division

Subtraction

1 + 2 + 3 + ...... + n = ______

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The set of complex numbers forms a group under the binary operation of

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Addition

none of these

Division

Subtraction

If a₁= 3, r = 2, then the nth term of the G.P. is

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2.3^n-1

3.2ⁿ

3.2ⁿ⁺¹

3.2^n-1

Period of cos x is _____

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If the angle of a triangle are in the ratio 2 : 3 : 7, the triangle is

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Obtuse

Acute

Right angle

Isosceles

f(x)g(x)- ∫g(x) f′(x) dx is equal to

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∫f(x)g′(x)dx

∫f′(x)g(x)dx

∫f′(x)g(x)′dx

∫f(x)g(x)dx

The points (5, -4, 2),(4, -3, 1),(7, -6, 4),(8, -7, 5) are vertices of a

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Square

Parallelogram

Rectangle

Rhombus

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an - an-1 will be common difference in an A.P if

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n = 1∀n∈ N

n>1∧n∈N

n∈Z

None of the above

The distance of point P(x,y) from focus in a parabola

y² =4ax, is:

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2a

a

x + a

x-a

If sin A = cos A, 0°<A<90° then A is equal to

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1

1/2

0

None of these

In R, the additive inverse of a is

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0

1

-a

1/a

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0! = ______

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0

1

2

Not defined

There are ______ types of rational fraction

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Three

Four

Five

Two

(A∪B)∪C= --------------------------

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A∩B(B∪C)

A∪(B∪C)

A∪(B∩C)

None of these

Number of ways of writing the letters of WORD taken all at a time is

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24

4

12

6

Union of the sets of rational and irrational numbers is called 6th set of

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Natural numbers

Real numbers

Whole numbers

Prime numbers

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