Formula required for combine 10 unique digits from bottom to top

There are instructions at the top of the page explaining how to attach your sample workbook (yellow banner: HOW TO ATTACH YOUR SAMPLE WORKBOOK). Screenshots are of little practical use as we cannot manipulate them.

A good sample workbook has just 10-20 rows of representative data that has been desensitised. The sample layout accurately matches that of your real data. It also has expected results mocked up, worked examples where required, relevant cells highlighted and a few explanatory notes.

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Thanks.

If you have Excel 2021 or 365:

=TEXTJOIN("",,UNIQUE(LET(a,A2:A129,SORTBY(a,SEQUENCE(ROWS(a),,ROWS(a),-1)))))

Which version of Excel are you using?

That's a shame - I'll have another look.

If you do, get 365.

Here is a little bit shorter formula for users Excel 2021 or 365:

Formula:

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In my opinion, this option should work for you:

Formula:

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For Excel 365/2021:

Formula:

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