SOLUTION: If P ⊆ Q and Q ⊆ P, then what can be said about the equality of the two sets? Thank you

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Question 437653: If P ⊆ Q and Q ⊆ P, then what can be said about the equality of the two sets?
Thank you
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If P ⊆ Q and Q ⊆ P, then P = Q or Q = P. In other words, the two sets are equal since both sets are contained in one another. Another way of saying this is that set P and Q are really the same set.