金色童年故事：一道數學題換回一對大閘蟹

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I sent out a math problem…

I got “crabs” back.

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Oct 14 · 3 min read

Marius presented an interesting math problem ABCDE * 4 = EDCBA a few days ago.

Lucas brought me a new one today. He is really a master of ASCII art.

I forwarded it to Lambert. His solution came back, together with a pair of crabs.

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