Talk:Sub-unit squares: Difference between revisions

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Revision as of 18:43, 23 September 2022 (view source) Wherrera (talk \| contribs) m (→‎Why all the answers except 1 end with 36) ← Older edit		Revision as of 18:50, 23 September 2022 (view source) Wherrera (talk \| contribs) mNo edit summary Newer edit →
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	:: Therefore, by elimination, the initial perfect square must end in 6.		:: 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)		: If the perfect square ends in 6, then when we subtract 1 from each digit, the resulting number will end in 5, so that number's 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)