Question 1

1. If A set has 3 elements and B set has 4 elements, how many elements in A X B

Accepted Answer

12

Answer

21

Answer

7

Answer

3

Question 2

2. If A X B = $\phi$ when

Accepted Answer

All

Answer

A and B are empty sets.

Answer

B = <math>\phi</math>

Answer

A is an empty set.

Question 3

3. If ( 2x, x + y ) = ( 6, 2 ) the value of x and y is ....

Accepted Answer

x = 3 , y = -1

Answer

x = -3 , y = -1

Answer

x = 1 , y = 5

Answer

x = -1 , y = 3

Question 4

4. A = {1 , 2 ,3 } and B = { 1, 2 } B X A = ?

Accepted Answer

{ (1, 1), ( 1, 2), (1, 3), (2, 1), (2, 2), (2, 3)}

Answer

{ (1, 1), ( 1, 2), (3, 1), (2, 1), (2, 2), (2, 3)}

Answer

{ (1, 1), ( 1, 2), (2, 1), (2, 2), (3, 1), (3, 2)}

Answer

{ (1, 1), ( 1, 2), (1, 3), (2, 1), (2, 2), (3, 2)}

Question 5

5. If R is a relation from set A to set B, then

Accepted Answer

R $\phi$ A X B

Answer

R = A X B

Answer

R = B X A

Answer

R $\phi$ B X A

Question 6

6. What is Domain & Range of the relation { ( 1, 2), (1, 4), (1, 6), (1, 8)}

Accepted Answer

{1} & {2, 4, 6, 8}

Answer

{1, 2, 4, 6, 8 } & {2, 4, 6, 8}

Answer

{2, 4, 6, 8} & {1}

Answer

{1, 1, 1, 1} & {2, 4, 6, 8}

Question 7

7. The relations R= { (1, 2), (2, 3), (3, 4), (3, 5), (4, 8)} & R'= { (1, 2), (2, 3), (3, 4)

Accepted Answer

R is not a function but R' is a function.

Answer

R is a function but R' is not a function.

Answer

can't say any thing

Answer

R & R' are both functions

Question 8

8. If f(x) = 2x - 5 , then f(-3) is :

Accepted Answer

-11

Answer

-3

Answer

1

Answer

11

Question 9

9. if f(x) = x²+ 3 , x is a real number. what is range ?

Accepted Answer

[ 3, $\phi$ )

Answer

[ 3, $\phi$ ]

Answer

[ 2, $\phi$ )

Answer

( 3, $\phi$ )

Question 10

10. What is domain of f(x) = |x|

Accepted Answer

( $\phi$ , $\propto$ )

Answer

No domain exist

Answer

( $\phi$ , $\propto$ ) - {0}

Answer

[ $\phi$ , $\propto$ ]

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