Question # 1

If z = (x,y) , then z ̅ =

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(-x,y)

(x,-y)

(-x, -y)

None of these

The set of rationals numbers between 0 and I is

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Finite

Null set

Infinite

None of these

3/2 is

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An irrational number

Whole number

A positive integer

A rational number

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1

-1

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

Geometrically, the modulus of a complex number represents its distance from the

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Point (1, 0)

Point (0, 1)

Point (1, 1)

Point (0, 0)

Decimal part of irrational number is

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Terminating

Repeating only

Neither repeating nor terminating

Repeating and terminating

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N

r

2r

π

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In R, the additive identity is

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0

1

-1

None

∀x,y∈ R and x < 0, y < 0, which one is true

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xy < o

xy = o

xy > o

None of these

Every prime number is also

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Rational number

Even number

Irrational number

Multiple of two numbers

The set of rational number is represented by

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W

R

Q'

Q

∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

If P is a whole number greater than 1, which has only P and I are factors. Then P is called

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Wholw number

Prime number

Even number

Odd number

a >b ⇒a +c >b +c is known as

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Trichotomy property

Additive property of inequality

Transitive property

Multiplicative property

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Rational number is a number which can be written as a terminating decimal fraction or a

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Non-terminating decimal fraction

Non-recurring

Recurring decimal fraction

a, b and c

The order axioms are satisfied by set of

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C

C and R

R

None of these

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Rational

Irrational

Even

Odd

If 4 > b or a < b than a = b is a

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Additive property

Transitive property

Trichotomy property of inequality

None of above

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If a set S contains n elements then P (S) has ........ number of elements

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2ⁿ

2ⁿ²

2.n

n²

If a > b or a < b than a = b is a

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Additive property

Transitive property

Trichotomy property of inequality

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1

3

2-i

-1

π is ______

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A complex number

A rational number

A natural number

An irrational number

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplication identity

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15

15 i

-15 i

-15

For any real numbers x,y,xy=o ⇒

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x ≠ 0 ∧ y ≠ 0

x = 0 ∨ y = 0

x = 0

y = 0

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Rule of quotient of fraction

Golden rule of fraction

Rule for product of fraction

Principle for equality of fraction

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x

y

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

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