Question # 1

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Diagonal matrix

Scalar matrix

Triangular matrix

Identity matrix

For all points (x,y) in second quadrant

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x > 0 , y < 0

x > 0 , y > 0

x < 0 , y < 0

x < 0 , y > 0

The point of contact of the circles x²+ y² - 6x -6y+10 = 0 and x² + y² =2 is

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(-3 ,2)

(1 , 3)

( -2 , -1)

None of these

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A positive integer

A negative integer

A natural number

An irrational number

If y = sin (ax + b), then fourth derivative of y with respect to x =

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a⁴cos (ax + b)

a⁴sin (ax + b)

-a⁴sin (ax + b)

a⁴tan (ax + b)

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A(α) - A(β)

A(α) + A(β)

A(α-β)

A(α+β)

Which of the following is skew symmetric matrix

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0

abc

1/abc

None of these

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A bag contains 5 white, 7 red and 5 black balls. If four balls are drawn one by one with replacement, the probability that none is white is

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(11/16)²

(5/16)²

(11/16)⁴

(5/16)⁴

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