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If A = {1,2,3}, B = {3,4} , C = {4,5,6}...

If `A = {1,2,3}, B = {3,4} , C = {4,5,6}`, then number of elements in the set `(AxxB)nn(BxxC)` is equal to

A

1

B

2

C

3

D

0

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The correct Answer is:
A
If `A = {1,2,3}`, ……….
`AxxB= {(1,3), (1,4), (2,3), (2,4), (3,3), (3,4)}`
`BxxC= {(3,4), (3,5), (3,6), (4,4), (4,5), (4,6)}`
`(AxxB)nn(BxxC)= {(3,4)}`
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