Question # 1

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

Such fraction which can not be written in the form ofp⁄q where p,q and q≠ 0,such fractions are called.

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Fractinal numbers

Rational Numbers

Even Numbers

Whole Numbers

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

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√3 i

√7

-2-i

√5

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1

-1

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

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Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t to adition

24 can be written as a product of

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Odd factors

Even factors

Whole factors

Prime factors

∀x,y∈R and x> 0 , y>0, if x > y

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None of these

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

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The additive inverse of 1 is

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1

-1

0

Does not exist

1.4142135... is ______

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A natural number

A rational number

A prime number

An irrational number

(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

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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N

r

2r

π

√(-1b) =?

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b i

-i b

b2

i√b

i² =

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1

2

-1

0

The multiplicative inverse of 1 - 2i is

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QUQ'

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The equation |x +4| = x has solution

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x = -2

x = 2

x = -4

x = 4

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4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

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15

15 i

-15 i

-15

i³ =

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-1

i

-i

1

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Reflexive property

Symmetric property

Transitive property

Additive property

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

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36 + (-32)i

-36 + 32i

6 + (-11)1

0, +(-12)i

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Rational

Irrational

Natural

Odd

If a is any real number and a = a is called

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symmetric property

Trichotomy Properties

Transitive Property

Reflexive Properties

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1

-1

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Principle of equality of Fractions

Rule for product of fraction

Golden rule of fraction

Rule of quotient of Fraction

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

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