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Let A and B be sets. If A nn X = B nn X ...

Let A and B be sets. If `A nn X = B nn X =phi` and `A uu X = B uu X` for some set X, show that A = B. (Hints `A = A nn (A uu X)`, `B=B nn (B uu X)` and use Distributive law )

A

`A-B=A nn B`

B

A=B

C

`B-A=A nn B`

D

None of these.

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