How to quickly check if two columns in Excel are equivalent in value?

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Chapters
00:00 Question
01:26 Accepted answer (Score 45)
02:13 Answer 2 (Score 3)
02:31 Answer 3 (Score 1)
02:59 Answer 4 (Score 0)
03:24 Thank you

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Full question
https://superuser.com/questions/301701/h...

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