Question # 1

a >b, b >c ⇒a >c is a

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Multiplicative property

Additive property

Trichotomy property

Transitive property of inequality

Q∪ Q' =

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Q

Q'

N

R

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In (x + iy) x is the known as

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Imaginary part of complex number

Real part of complex number

Complex number

None of above

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Principle of equality of fractions

Rule for product of fraction

Rule for quotient of fraction

Some of two real numbers is also a real number , this property is called:

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Commutative property w.r.t addition

Closure property w.r.t. addition

Associative property w.r.t. addition

Distributive property w.r.t addition

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

√53

(7,9) +(3,-5) =

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(4,4)

(10,4)

(9,-5)

(7,3)

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Multiplication property

Additive property

Trichotomy property

Transitive property of inequality

The multiplicative inverse of 4 is

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-4

-1/4

1/4

1

If Z = (1,2), then Z^-1 =?

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(0.2, 0.4)

(-0.2 ,0.4)

(0.2,-0.4)

(-0.2,-0.4)

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1

-1

Any recurring decimal represents a

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Irrational no

Integer

Rational no

None of these

∀ 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

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)

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Principle of equality of fractions

Rule for product of fractions

Golden rule for fractions

Rule for quotient of fractions

i¹⁰¹=

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i

i²

-i

-1

The order axioms are satisfied by set of

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C

C and R

R

None of these

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(a +bi) -c (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

Union of the sets of rational and irrational numbers is called 6th set of

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Natural numbers

Real numbers

Whole numbers

Prime numbers

In R the right cancellation property w.r.t. addition is

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Multiplicative inverse of 0 is

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0

1

±1

Does not exist

The multiplicative inverse of 1 - 2i is

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Every real number is

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a positive integer

a rational number

a negative integer

a complex number

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A complex number

A rational number

A natural number

An irrational number

The square roots of negative numbers is called

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Real no

Complex no

Positive no

Negative no

The value of x, and y, when (x + iy)²= 5 + 4i

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X = 2, y = -1

X = -2, y=1

X = 2, y = -1

X = 2, y = 2

A prime number can be a factor of a square only if it occurs in the square at least

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Once

Thirce

Twice

None of these

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

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ECAT Mathematics Chapter 1 Number System Online Test MCQs With Answers

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