Question # 1

The square matrix A is skew-symmetric when At =

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-B

-C

-A

-D

If the angle between two vectors with magnitude 6 and 2 is 60° when their scalar product is

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12

6

3

0

A cone is generated by all lines through a fixed point and the circumference of

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a Circle

an ellipse

a Hyperbola

None of these

The sum of coefficients in the binomial expansion equals to

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2

2ⁿ⁺¹

2^n-1

2ⁿ

sin^-1 x =

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tan^-1 x

Cosec^-1 x

Cosec x

cosec^-1(1/x)

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

Which of the following is a scalar.

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electric field

magnetic field

weight

mass

Let A and B be two sets. If every element of A is also an element of B then

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The last term of (1+2x)-2

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(-1)-2 (2x)-2

(-1)-4(-2x)-2

(-1)-3(2x)-3

Does not exist

The distance of the point (2,3) from origin is

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5

2

3

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