Question # 1

If A and B are matrices such that AB=BA=I then

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A and B are multiplicative inverse of each other

A and B are additive inverses of each other

. A and B are singular matrices

A and B are equal

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None of these

Which is not a half plane

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ax + by < c

ax + by > c

Both A and B

None

The set of complex numbers forms a group under the binary operation of

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Addition

Multiplication

Division

Subtraction

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None of these

The number of diagonals of a six sided figure are

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9

6

12

3

Which of the following is the subset of all sets?

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{1, 2,3}

{0}

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Which is an explicit function

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All

The length of rectangle is twice as much as its breadth. If the perimeter is 120 cm, the length of the rectangle is

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10 cm

20 cm

30 cm

40 cm

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0

1

-1

2

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