Maths-

General

Easy

Question

# Let A and B two sets such that n( AxB)= 6 . If three elements of AXB are ( 3,2)(7,5)(8,5), then

- A= {3,7,8}
- {2,5,7}
- {3,5}
- None of the above

Hint:

**Hint:- **Cartesian product of A and B is denoted by A X B and it is defined as set og all ordered pairs (a, b) such that and

## The correct answer is: A= {3,7,8}

### We have given the two sets A and B

And n( A x B)= 6

Therefore, the one set should contain 3 and one should contain 2 elements

Since, {(3,2),(7,5),(8,5)} are the elements of A×B.

It follows that the elements of

set A={3,7,8}

and B={2,5}

Hence,

A × B = {(3,2),(3,5),(7,2),(7,5),(8,2),(8,5)}

Therefore the correct option is a) A= {3,7,8}

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