Question # 1

The set { 1 , -1} is closed w.r.t.

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Addition

Multiplications

Subtraction

None of these

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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0

1

-1

2

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(a + b)c = ac + bc

a + b = b + a

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

a(b +c) = ab + ac

π is ______

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A complex number

A rational number

A natural number

An irrational number

202.04 is an example of

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Recurring decimals

Non-recurring decimals

Terminating decimals

None of above

A non-terminating non_recurring decimal represents an

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Irrational no

Both a & c

Rational no

None of these

Any whole number can be written as a product of factors which are

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Even number

Odd numbers

Prime number

Rational number

The order axioms are satisfied by set of

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C

C and R

R

None of these

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Associative law of addition

Commutative law of addition

Additive identity

Closure law of addition

Multiplicative inverse of "1" is

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0

±1

1

{0,1}

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

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Additive property of inequality

Commutative property

Additive inverse

Additive identity

In polar form of complex number r =

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What is the conjugate of -7 -2i?

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-7 + 2i

7 + 2i

7 -2i

None of these

The symbol of irrational is

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W

N

Q

Q'

a >b ⇒a +c >b +c is known as

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Trichotomy property

Additive property of inequality

Transitive property

Multiplicative property

The multiplicative inverse of 1 - 2i is

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A prime number

An integer

A whole number

An irrational number

∀ 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

1/3 is ______

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A prime number

An integer

A rational number

An irrational number

1.4142135... is ______

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A natural number

A rational number

A prime number

An irrational number

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

I is not

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Real number

Natural number

Prime Number

Whole Number

The multiplicative inverse of (a,b) is

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a = a

a < a

a > a

a²= a

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplication identity

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i³=

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-1

i

-i

1

Any recurring decimal represents a

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Irrational no

Integer

Rational no

None of these

Every whole number is

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A real number

An irrational number

A prime number

A negative integer

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

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