Question # 1

Conjugate of complex number (-a, -b) is:

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(-a, b)

(-a, -b)

(a, -b)

none of these

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integer

rationalnumber

irrationalnumber

naturalnumber

The imaginary part of the complex number a + bi is:

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a

b

bi

none of these

If A is a square matrix, then A + A^t is:

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The range of principal sine function is:

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No. of necklaces can be made from 7 beads of different colors ?

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360

120

60

70

Inverse sine function is written as:

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(sin x)^-1

sin x^-1

arc sinx

arc sin^-1 x

The product of three G.Ms between 1 and 16 is:

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32

64

128

16

If A is a square matrix order 3 × 3 the |kA| equals:

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k |A|

k²|A|

k³ |A|

k⁴ |A|

If P(x) is a polynomial of degree m and Q(x) is a polynomial of degree n, the product P(x) . Q(x) will be a polynomial of degree:

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m . n

m - n

m + n

m × n

In 2s = a + b + , then in any triangle ABC:

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all of above

If S is the H.M between 2 and b then b = :

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-10

10

7

5

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4

16

8

64

Two A.Ms. between 3 and 9 are:

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3. 6

5, 7

6, 12

3, 9

ⁿC₄ =ⁿC₈then n = :

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4

12

8

6

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z is purely real

z is any complex number

z is purely imaginary

real part of z = imaginary part of z

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With usual notations for triangle R equals:

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