Question # 1

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Additive property in R

Multiplication property in R

Cancellation property in R

Distribution property in R

π is ______

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A complex number

A rational number

A natural number

An irrational number

The identity element with respect to subtraction is

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0

1

-1

Does not exist

The decimal fraction in which we have finite number of digits in its decimal part is called.

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recurring decimal fraction

Non terminating faction

Non recurring fraction

terminating decimal fraction

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Principle of equality of fractions

Rule for product of fractions

Golden rule for fractions

Rule for quotient of fractions

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

The set of rationals numbers between 0 and I is

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Finite

Null set

Infinite

None of these

The multiplicative inverse of 2/3 is

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3/2

-2/3

-3/2

1

In R, the multiplicative inverse of a is

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0

1

-a

1/a

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

The multiplicative inverse of 1 - 2i is

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Which of the following sets has closure property w.r.t. addition

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{ 0 }

{ 1 }

{ 0, -1}

{ 1, -1}

2.333....is a

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Irrational no

Complex no

Rational no

None of these

24 can be written as a product of

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Odd factors

Even factors

Whole factors

Prime factors

3/4 is ______

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An odd number

An even number

A natural number

A rational number

If in a set of real no a is multiplicative identity then

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a,a = a²

a,a = 1

a,a = 0

None of these

The symbol of irrational is

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W

N

Q

Q'

Which of the following has the same value as i¹¹³?

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i

-1

-i

1

A subset of set of complex number whose elements are of the form (a,0) is called

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Real number

Complex number

Rational number

Irrational number

Q∪ Q' =

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Q

Q'

N

R

In R, the multiplicative identity is

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0

1

-1

None

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

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(a, 0)

(0, b)

(a, b)

(-a, -b)

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

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√3 i

√7

-2-i

√5

0 (zero) is

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An irrational number

A rational number

A negative integer

A positive number

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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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(a + b)c = ac + bc

a + b = b + a

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

a(b +c) = ab + ac

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

(a,0) x (c, 0) =

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(0,ac)

(ac, 0)

(0,0)

(a, c)

4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

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