npub1zdp33shl69xr0uq3x8n5gsjykq9upycwh6nqm02c3f6x0frrn0dq42vqv8 (npub1zdp…vqv8)
If I wanted students to appreciate this property more, I’d give them a puzzle to solve where it has been taken away!
Let x be a number on a 12-hour clock, where we have changed the “12” to read zero.
For which choices of x will moving
(x-2)(x-3)
hours clockwise from zero take you back to zero?
Greg Egan /
npub1qq…j5nhv
2024-01-04 12:50:41
in reply to nevent1q…mm4t
Author Public Key
npub1qqm7nu2qf25xd3mw6y6cyp4v2wr7ktf43ymp5wqz4u8jvz76ymtsjj5nhvPublished at
2024-01-04 12:50:41Event JSON
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