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/sci/ - Science & Math

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>> No.15223126 [View]
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15223126

>>15216384
This was fun. I'm a bit of a midwit so I didn't understand how >>15217846 and >>15217939 did it, but I have to admit I looked at their solutions before I finished. It took me a few days.

>Tldr; choosing k from n, then m from k is equivalent to choosing m from n, then any subset of n-m.

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