Comment on What are the most mindblowing fact in mathematics?

Nfamwap@lemmy.world ⁨1⁩ ⁨year⁩ ago

11 X 11 = 121

111 X 111 = 12321

1111 X 1111 = 1234321

11111 X 11111 = 123454321

111111 X 1111111 = 12345654321

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