arraysgoogle-sheetsindexingcount
Use an array to get the count for x
rows A B
1 1 Joe
2 2 Bill
3 3 Pete
4 4 Victor
5 5 Don
6 6 Victor
7 7 Bob
=ArrayFormula(LOOKUP(2,1/(b1:b7="Victor"),(a1:a7)))
This will output 6 because I have numbered the rows in A. How do I add count() into the array so it will actually count the rows up to (the last) Victor?
Solution
To get the number of rows in column B up to the last occurrence of "Victor", you can use the following formula:
=ROWS(B1:XLOOKUP("Victor",B:B,B:B,,,-1))
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