Talk:Sub-unit squares: Difference between revisions
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:: Therefore, by elimination, the initial perfect square must end in 6.
: If the perfect square ends in 6, then its tens digit will be odd. When we subtract 1 from each digit, the resulting number will end in 5, so its tens digit must be 2 if the result is a perfect square. So, the initial number must end in 36. --[[User:Wherrera|Wherrera]] ([[User talk:Wherrera|talk]]) 18:43, 23 September 2022 (UTC)
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