Question # 1

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

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Addition

Multiplication

Division

Subtraction

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1

2

0

4

3.5+5.4=5.4+3.5 =8.9 this property of addition is called

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additive identity

assoclative property

commulative property

closure property

Which of the following is not a unit vector

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[1, 1, 1]

[0, 1, 0]

[0, 0, 1]

[1, 0, 0]

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0.9

0.74

0.2016

None of these

The sum if 1,3,5,7,9........ up to 20 terms is

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400

472

563

264

The number of words that can be formed out of the letters of the word ASSASSINATION is

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a f(x) + c

f(x) + a

Which of the following is a vector

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length

momentum

volume

speed

For any two sets A and, A ⊆ B if

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x ∈ A ⇒ x ∈ B

x ∉ A ⇒ x ∉ B

x ∈ A ⇒ x ∉ B

None of these

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1

5

7

9

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The points (5, 2, 4)(6, -1, 2) and (8, -7, k) are collinear if k is equal to

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-2

2

3

-1

In R, the multiplicative inverse of a is

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0

1

-a

1/a

The conic is a parabola if

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e < 1

e > 1

e = 1

None of these

Which of the following does not represent absolute value of a vector

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magnitude

length

norm

number

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

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1

i

-1

-i

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

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2nd

3rd

4th

5th

i¹⁰¹=

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i

i²

-i

-1

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No solution

One real solution

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If the distance of any point on the curve from any of the two lines approaches zero then it is called

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Axis

Directrices

Asymptotes

None

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The law of of sines

The law of tangents

The law of consines

None of these

The function f : x→ y defined as f (x) =α∀x∈ X,α∈ y is called

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Constant function

Polynomial function

Identity function

Linear function

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

Which of the following represents a vector

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(x, y)

If 0 = R, thenthe additive inverse of a is

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1/9

^1/-9

a

-a

Matrices A = [aij] 2 x 3 and B = [bij] 3 x 2 are suitable for

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BA

A2

AB

B2

If f(x)= x³ then f(-2) is

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-2

-4

-8

8

If ax + bx + c =0 is satisfied by every value of x,then

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b = 0,c = 0

c = 0

b = 0

a = b = c = 0

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