# Sets

Submitted by alpha on Wed, 11/18/2009 - 18:11.

Let A and B be two sets . Show that the sets A x B and B x A have an element in common iff the sets A and B have an element in common.

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## Sets
Submitted by alpha on Wed, 11/18/2009 - 18:11.
Let A and B be two sets . Show that the sets A x B and B x A have an element in common iff the sets A and B have an element in common. |