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‘Tis the Season

Charles Trigg proposed this festive cryptarithm in the American Mathematical Monthly in 1956:

MERRY XMAS TO ALL

If each letter is a unique representation of a digit, and each word is a square integer, what are these four numbers?

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from Futility Closet https://www.futilitycloset.com/2017/12/07/tis-the-season/

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