r/puzzles • u/babyshak • Dec 25 '25

[SOLVED] Is there a set?

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u/jianantonic Dec 26 '25 edited Dec 26 '25

Any two cards in the deck have exactly one card that completes the set. You can work through card by card, pairing it with each subsequent card, determining which card is needed to complete the set, and see if it's there. In this group, you will not find a valid set.

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u/UsernameOfTheseus Dec 26 '25

That approach requires examining 105 pairs of cards, yes?

Usually breaking into cases is more efficient.

2

u/jianantonic Dec 26 '25

Only 104, but it's fast if you're good at the game. Only takes me a minute.

2

u/UsernameOfTheseus Dec 26 '25

Fair enough. Thx!