Question # 1

Given X.Y are any two sets such that number of elements in X = 18, number of elements in set Y = 24,and number of elements in set X∪ Y =40,then number of elements in set x∩ Y =

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3

1

2

4

If A is skew Hermitian Matrix then which of the following is not skew Hermitian matrix

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A2

A5

A3

A7

A stationary point x is a relative exterma of y= f(x) is

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f′′ (x) > 0

f′′ (x) < 0

f′′ (x) ≠ 0

f′′(x) = 0

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

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A

B

U

None of these

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2 and 9

3 and 2

2/3 and 9

3/2 and 6

An equation which holds good for all values of variables is called

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Equation

Conditional equation

Constant

None

Under multiplication, solution set of is

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Groupoid

Abelian group

Semi group

All of these

The multiplicative inverse of 4 is

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-4

-1/4

1/4

1

tan (π-θ) = ______

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- sinθ

- tanθ

- cosθ

- cotθ

sin (α+β) - sin (α -β) =

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4 cosαsinβ

2 cosαsinβ

4 cosαcosβ

4 sin αsinβ

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