- #1

280Z28

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**What are "Subset Pairs" as mentioned in this problem?**

In reference to this problem. BTW - I'm not asking for a solution or even a method of attack for a solution since I just enjoy doing these puzzles. I'm just trying to get clarification on one of the terms used.

http://mathschallenge.net/index.php?section=project&ref=problems&id=106

...out of the 25 possible subset pairs that can be obtained from a set for which n = 4...

Say, for A={3, 5, 6, 7} (example pulled from here), what are the 25 subset pairs?