Question # 1

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1

-1

0

None of these

64.A point (x, y, z) moves parallel to xy plane. Which of the three variables x, y, z remain fixed?

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z

x

y

x and y

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One-one but not onto

One-one and onto

Onto but not one-one

Neither one-one nor onto

The line y =mx +1 is tangent to the parabola y2 =4x if

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m=1

m=2

m=3

m=4

The point of concurrency of the medians of a triangle is called

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incentre

circumcentre

e-centre

centroid

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The transpose of a column matrix is a ______

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Zero matrix

Diagonal matrix

Column matrix

Row matrix

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Area of the circle with ends of a diameter at (-3,2) and (5,-6)

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128π sq. units

64π sq. units

32π sq.units

None of these

In an A.P,a +(n-a)d is

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1st term

General term

Last term

None of these

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