From the archive
Day 46
Friday, 18 September 2026
Price a pick list against a supplier catalogue that no longer lists everything
XLOOKUP's fourth argument hands back whatever you tell it the moment nothing matches, so a missing part number never has to blow up into #N/A on a sheet someone else is reading.
Task:
You handle purchasing for Meridian Circuits, a small electronics assembler. The current price list for four active parts sits in rows 2 to 5. This week's pick list has four parts on it, but the supplier discontinued a couple of them since the price list was last updated. In C8, look up each part's unit price from the price list, showing "Discontinued" for any part number that no longer appears there. Copy down through C11.
The daily challenge is part of Pro
A new exercise every morning, plus every day that came before it — a back catalogue that grows by one a day, whether or not you were here for it.
Recent days
The last 14 days. Today's challenge is free while your streak is alive; Pro opens every past day too.
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