Question # 1

202.04 is an example of

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Recurring decimals

Non-recurring decimals

Terminating decimals

None of these

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1

-1

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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

i =

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√1

√2

√-2

√-1

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Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t. to addition

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

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(a, 0)

(0, b)

(a, b)

(-a, -b)

π is ______

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A complex number

A rational number

A natural number

An irrational number

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Symmetric property

Cancellation property w.r.t. multiplication

Reflexive property

Transitive property

202.04 is an example of

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Recurring decimals

Non-recurring decimals

Terminating decimals

None of above

∀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

Gooch crucible is made of :

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Brass.

Porcelain.

Bronze.

Gold.

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1

-i

i

0

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Associative law of multiplication

Commutative law of addition

Commutative law of multiplication

Associative law of addition

If Z₁ = 1+ i, Z₂ = 2+3i , then |Z₁ -Z₂| =?

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√5

√7

-1-2i

√3

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplication identity

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∀ 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

The equation |x + 4| = x has solution

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x = -2

x = 2

x = -4

x = 4

a.a^-1 = a^-1.a = 1 is a

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Commutative law of multiplication

Multiplicative identity

Associative law of multiplication

Multiplicative inverse

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The square root of every incomplete square is an

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Rational numbers

Even numbers

odd numbers

Irrational numbers

The negative square root of 9 can be written as:

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-√9

√9

√18

-√18

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None of these

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A natural number

A rational number

An irrational number

A whole number

3.5+5.4=5.4+3.5 =8.9 this property of addition is called

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additive identity

assoclative property

commulative property

closure property

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a = a

a < a

a > a

a²= a

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

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Addition

Multiplications

Subtraction

None of these

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

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