10th Class Maths MCQ with Answers Chapter 5

If set a has 3 elements and B has 4 then A x B has __________ elements.

7

4

12

3

The measures that are used to determine the degree or extent of variation in a data set are called:

median

A.M

central value

measures of dispersion

Which of the following is commutative law?

A? (B ? C) = (A? B)? C

A? B = B ? A

A? (B?C)= (A?B)?C

(A ? b)^c = A^c ? B^c

If A and B are two disjoint sets then A? b = ______

B? A

A

B

?

If f: A? B and range of f= B , then f is an…………..

onto function

bijective function

function

into function

If x? A and x? b, then { x } is equal to………….

B – A

A – B

A^c

A? B

If A= {1,2,3} , B ={4,5} and R+{(1,4),(2,5),(3,4)} then R is __________

Not a funtion

A function A to A

One – one function from A to B

An onto function from A to B

(A?B)’= _____________

A?B

A’?B’

A?B

A’?B’

By definition, which of the following is a set?

{0,1,2,3,1}

{1,2,3,2}

{a,b,c,d}

{l,m,n,o}

A collection of well-defined distinct objects is called.

Power set

Set

subset

None of these