It's simple to count all cells that match a certain value, but how do i could all cells that dont match one of the values within a range?
For example, how do I could cells not equal to red blue or green?
Normally you can do =COUNTIF(A2:A10,B2)
to count ones that match a cell, but as you see from the picture it doesn't work with a range.
there are various ways like:
=COUNTA(A2:A)-SUM(C2:C4)
or:
=COUNTA(IFNA(FILTER(A2:A, NOT(REGEXMATCH(A2:A, TEXTJOIN("|", 1, B2:B))))))