Question # 1

1/3 is ______

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A prime number

An integer

A rational number

An irrational number

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Scalar matrix

Identity matrix

Null matrix

Symmetric matrix

For different values of k equation 4x+5y =k represents

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Parallel lines

Lines parallel to x -axis

Perpendicular lines

Lines parallel to y -axis

The angle of elevation of the tops of two towers at the middle point of the line joining the foots of the tower are 60^οand 30^οrespectively. The the ratio of the heghts of the tower is

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2 : 1

3 : 1

1 : 2

1 : 3

The sample space for tossing a coin once is

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{T, T}

{H, H}

{H, T}

None of these

sin -1(sin2π/3) =

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π/2

2π/3

-3π/2

π/3

F(x) = x^xdecreases in the interval

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(0, e)

(0, 1)

(-∞,0)

None

Projection of vector u along v is

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|v| cosθ

|u| cosθ

|v| sinθ

|u| sinθ

If a > 0 they parabola y2 =-4ax lies in

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I and iv quadrant

I quadrant

II and III quadrant

All are incorrect

∀x,y∈ R and x < 0, y < 0, which one is true

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xy < o

xy = o

xy > o

None of these

A function which is to be maximized or minimized is called an

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Explicit function

Implicit function

Objective function

None

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