I'd love some intuition for this result.
I get that the primes will all be closed, because only the corresponding prime'th student will toggle that locker, but I don't see a clever argument for just the squares being left.
The squares are exactly those numbers with an odd amount of factors. Because the amount is odd, they are now open.
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That makes a ton of sense
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Indeed! 👍
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There is an intuitive argument. But I'll give it some more time before divulging it.
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Fair enough
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