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April 1, 2015

April 1, 2015

Posted by **Anonymous** on Saturday, April 23, 2011 at 12:59pm.

- math subsets -
**MathMate**, Saturday, April 23, 2011 at 1:14pmIf A={13,14,15}

A proper subset B of A is such that

B∈A but B≠A.

The following sets are all proper subsets of A:

∅, {13}, {14}, {15}, {13,14}, {13,15}, {14,15}

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