Question # 1

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1

3

2-i

-1

∀ z ∈ C, multipliucative is

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(1,1)

(1,0)

(0,1)

None of these

∀x,y∈R and x> 0 , y>0, if x > y

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None of these

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Multiplication property

Additive property

Trichotomy property

Transitive property of inequality

The additive inverse of 1 is

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1

-1

0

Does not exist

The sum of complex number (a,b) and (c,d) is

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If z=(x,y) then z has no multiplicative inverse when

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x ≠ 0, y = 0

x = 0, y = 0

x = 0, y ≠ 0

None of these

The real number system contains.

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Positive Numbers

Negative numbers

Zero

(option a, b and c)

Multiplicative inverse of 0 is

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0

1

±1

Does not exist

6 is

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A prime integar

An irrational number

A rational number

An odd integer

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The product of complex numbers (a,b) and (c,d) is

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(ac, bd)

(ac-bd, ad+bc)

(ab,cd)

(ac+bd,ad-bc)

0.25 is ______

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An irrational number

A natural number

A prime number

A rational number

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplication identity

The multiplicative inverse of 1 - 2i is

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i⁹ =

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i²

-1

1

i

14 is not a

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Prime number

Whole number

Even number

Real number

Every irrational number is

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A real number

A prime number

A natural number

An integer

√x = ______ if is a prime number

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Rational no

Natural no

Irrational no

Complex no

Which element is the additive inverse of (a,b) in Complex numbers

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(a,0)

(0,b)

(a,b)

(-a,-b)

Every prime number is also

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Rational number

Even number

Irrational number

Multiple of two numbers

4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

Every real number is

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a positive integer

a rational number

a negative integer

a complex number

Every real number is

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A complex number

A rational number

A natural number

A prime number

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Trichotomy property

Additive property of inequality

Transitive property

Multiplicative property

(a+bi) - (c+di)=

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(a+b) = (c+d)

(a+c) + i(b+d)

(a - c) + (c- d)i

(a - c)+ (b - d)i

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Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test MCQs With Answers

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