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7305028155 | 7824804015

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About us
Departments
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Maths Quiz

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/

Maths Quiz

1. If | adj(adj A) |=| A |9 , then the order of the square matrix A is

3

4

2

5

2. If A is a 3× 3 non-singular matrix such that AAT = AT A and B = A−1 AT , then BBT =

A

B

I3

BT

1/3

1/9

1/4

1

2

3

4

1

2

3

4

-40

-80

-60

-20

15

12

14

11

0

-2

-3

-1

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

-4/5

-3/5

3/5

4/5

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

0

1

2

3

1/2

1

2

3

1

2

3

4

1

2

3

5

1

2

3

4

1

2

3

4

1

2

3

4

25. If z is a complex number such that z ∈ C \ R and z + 1/z ∈ R , then | z | is

0

1

2

3

26. z1 , z3 , and z3 are complex numbers such that z1 + z2 + z3 = 0 and | z1 | =| z2 | =| z3 | = 1 then z 2 + z 2 + z 2 is

3

2

1

0

27. A zero of x3 + 64 is

0

4

4i

-4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

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3

4

1

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3

4

1

2

3

4

1

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3

4

1

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3

4

1

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4

1

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4

1

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4

1

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4

1

2

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4

1

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1

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1

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1

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3

4

1

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3

4

1

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3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

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3

4

1

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3

4

1

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3

4

1

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3

4

1

2

3

4

1

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3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

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4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

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