Question # 1

The roots of the equations will be equal if b²- 4ac is

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Positive

Negative

1

Zero

The matrix A is Hermitian when (A)' =

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A

-A

A

A'

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none of these

Probability of an impossible event is

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0

-1

1

∞

Two balanced dice are tossed once, the sample space when the integers on the faces of two dice are the same is

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{(1, 1), (2, 2), (3, 3)}

{(4, 4), (5, 5), (6, 6)}

{(1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6)}

None of these

If nis positive integers, then 2ⁿ>2n+1, only when

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n≤ 3

n≥ 3

n≤ 2

n≤ 1

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none of these

The end points of the major axis of the ellipse are called its

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Foci

Vertices

Co - vertices

None of these

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

If cos (2 sin-1 x) = 1/9 , then what is the value of x?

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1/3

-2/3

2/3

2/3 , -2/3

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