Where do you find math problems to do for fun?

Here on bsky/social media.
29.2% (7)
Past contest papers/books.
20.8% (5)
Stack Exchange.
25.0% (6)
Elsewhere (please specify).
25.0% (6)

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Posted by @makeaproblem.bsky.social on 5/1/2026, 7:25:54 PM