Question # 1

i³ =

Choose an answer

-1

i

-i

1

(√3+√5)+√7 = √3 +(√5 +√7) property used in above is

Choose an answer

Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t to adition

Choose an answer

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

Choose an answer

Additive property

Transitive property

Trichotomy property of inequality

Choose an answer

A rational number

A natural number

An irrational number

An integer

If z₁= 2 + 6i and z₂= 3 + 7i, then which expression defines the product of z₁and z₂?

Choose an answer

36 + (-32)i

-36 + 32i

6 + (-11)1

0, +(-12)i

√-1 b=

Choose an answer

b

2

2b

None of these

The square root of every incomplete square is an

Choose an answer

Rational numbers

Even numbers

odd numbers

Irrational numbers

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

Choose an answer

Even number

Odd numbers

Prime number

Rational number

Choose an answer

additive property

multiplicative property

additive identity

multiplicative identity

∀a,b,c∈R, a >b ∧ b>c ⇒ a >c is

Choose an answer

Trichotomy property

Transitive property

Symmetric property

Additive property

∀x,y,z ∈ R and z 0,then

Choose an answer

x > y ⇒ xz > yz

x<y ⇒ xz < yz

x < y ⇒ xz > yz

None of these

Choose an answer

None of these

Choose an answer

The multiplicative inverse ofx^(-1) is

Choose an answer

x

a-2

0

1

In R the number of identity elements w.r.t.'.' is

Choose an answer

One

Two

Three

Four

i =

Choose an answer

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

Choose an answer

(a +b) = (c +d)

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

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

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

Choose an answer

Rational

Irrational

Natural

Odd

What is the conjugate of -6 -i?

Choose an answer

-6 +i

6+i

-6 -i

6 -i

Associative law of multiplication

Choose an answer

ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

Choose an answer

Closure law of addition

Associative law of addition

Commutative law of multiplication

Associative law of multiplication

The multiplicative inverse of 1 is

Choose an answer

1

-1

0

Does not exist

Choose an answer

-3 -2i

3 +2i

1 + 2i

1 - 2i

Choose an answer

1

-1

4/√49 is a

Choose an answer

Irrational Number

Prime Number

Rational number

Whole number

The additive inverse of 2/3 is

Choose an answer

3/2

-2/3

-3/2

0

Name the property used in 4.1 + (-4.1) = 0

Choose an answer

Additive inverse

Multiplication inverse

Additive identity

Multiplication identity

∀a,b, c ε R ac = bc ⇒ a = b, c ≠ 0 is a

Choose an answer

Symmetric property

Cancellation property w.r.t multiplication

Reflexive property

Transitive property

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer