2025 had a bunch of bits of fun mathematical trivia: 45² = 45 x 45 = 2025 Also, ... | Hacker News

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		sam_bristow 1 day ago \| parent \| context \| favorite \| on: Show HN: A 45x45 Connections Puzzle To Commemorate... 2025 had a bunch of bits of fun mathematical trivia: 45² = 45 x 45 = 2025 Also, 9² x 5² = 2025 40² + 20² + 5² = 2025 My favourite? 1³+2³+3³+4³+5³+6³+7³+8³+9³ = 2025

thomaswc 15 hours ago [–]

Ha! I really should have known that last one, given that I once wrote a paper about the sum of cubes. https://dl.acm.org/doi/abs/10.5555/1378446.1378486

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