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If Aa n dB are two sets having 3 element...

If `Aa n dB` are two sets having 3 elements in common. If `n(A)=5,n(B)=4,` find `n(AxxB)a n dn[(AxxB)nn(BxxA)]dot`

A

20

B

16

C

3

D

9

Text Solution

Verified by Experts

The correct Answer is:
D
Since A and B have 3 elements in common. Therefore, from example 3,
`(AxxB)nn(BxxA)` has 9 elements.
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OBJECTIVE RD SHARMA ENGLISH-CARTESIAN PRODUCT OF SETS AND RELATIONS -Section I - Solved Mcqs
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