Question # 1

If B-A≠φ , then n(B-A) is equal to

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n(a)+n(c)

n(c)-n(a)

n(a)-n(c)

None of these

If b²- 4ac = 0 then the roots of the equation are

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Real and distinct

Real and equal

Imaginary

None of these

f(x) = 1 is

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identity function

constant function

linear function

quadratic function

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cos 2x

2 cos 2x

2 sin2x

-2 cos2x

The straight line passing through the focus and perpendicular to the directrix of the conic is known as its

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Tangent

axis

Focal chord

major or manor axis

The system of measurement in which the angle is measured in degrees, minutes and seconds is called the

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circular system

CGS system

sexagesimal system

none of these

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none of these

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Which one represents a sequence

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an

Sn

a(n)

{an}

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R

2R

r

2r

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