Question # 1

Which of the following is associative property w.r.to addition:

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a + b = b + a

a (bc) = (ab) c

a + (b + c) = (a + b) + c

None of these

Which of the following sets have the Closure Property w.r.t addition.

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{0}

{0, -1}

{0,1}

The value of i^{9 is:}

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1

-1

i

-i

Conjugate of 4i - 3 is:

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4i + 3

-4i - 3

-4i + 3

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5/4

4/5

-5/4

-4/5

Every real number is also a complex number with imaginary part as ______

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1

b

O

10

Symbol "For all" is used:

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A

Ɐ

gama

D

Solution of x²= -1 in real numbers:

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-1

+1

Solution does not exist

The conjugate of 5+ 4i is:

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-5 +4i

-5 - 4i

5 - 4i

5 + 4i

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-2/5

2/5

5/2

The conjugate of 5 + 4i is

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-5 + 4i

-5 - 4i

5 - 4i

5 + 4i

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Natural number

Whole number

integers

Rational numbers

The value i¹⁰

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1

-1

i

-i

Real part of 2ab ( i + i²) is:

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2ab

-2ab

2abi

-2abi

If Z < 0 then x < y→

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xz < yz

xz > yz

xz = yz

None of these

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