Question # 1

Given X, Y are any two sets such that number of elements in X=28, number of elements in set Y=28, and number of elements in set X∪Y=54, then number of elements in set X∩Y=

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-7 + 2i

7 + 2i

7-2i

√53

If Z= (1,2). tjem Z^-1 = ?

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(0.2, 0.4)

(-0.2, 0.4)

(0.2, -0.4)

(-0.2, -0.4)

The value of Cos (1/2 Cos^-1 1/2) is equal to

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√3/2

-3/4

1/16

1/4

If Z₁ = √-36, Z₂=√-25, Z₃= √-16, then what is the sum of Z₁, Z₂ and Z₃ ?

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√3 I

√7

-2-1

√5

The associative angle of 280^o is

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100^o

10^o

80^o

-80^o

An angle 0 is such that tan θ = 1 and cos θ is negative then

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Sin θ is positive

Cos θ = √2/4

cosθ = -1

sec θ is negative

If ab > 0 and a < 0, which of the following is negative?

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b

-b

-a

(a - b)²

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

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A =B

A < B

A< X

B < y

The principal value of sin^-1 [√3/2] is

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π/3

-π/3

2π/3

5π/3

The general solution of the differential equation dy/dx = log x is

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Y = -x log x- x +c

Y = x log x + x²

Y = x log x -x +c

Y= 2x log x + 2x +c

A point of a solution region where two of its boundary lines intersect is called

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Boundary

Inequality

Half plane

Vertex

A function F(x) is called even if

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F(x) = F(-x)

F(x) = -F(x)

2F(x) = 0

If Z₁ = 1+i, Z₂ = 2+3i, then |Z₂-Z₁|=?

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√3 I

√7

-2-1

√5

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