Hello Divaker,
Consider data is in A1:Z1.
If you are looking to find first #N/A in the range & count #N/A after that
occur consecutively, here is a one way:
Only work with XL2007 or later:
=IFERROR(COUNTIF(OFFSET(A1,,MATCH(TRUE,INDEX(ISNA(A1:Z1),0),0)-1,,MATCH(1,INDEX(1-ISNA(OFFSET(A1,,MATCH(TRUE,INDEX(ISNA(A1:Z1),0),0)-1,):Z1),0),0)),"#N/A"),0)
This will work in all excel versions:
=LOOKUP(9E300,IF({1,0},0,COUNTIF(OFFSET(A1,,MATCH(TRUE,INDEX(ISNA(A1:Z1),0),0)-1,,MATCH(1,INDEX(1-ISNA(OFFSET(A1,,MATCH(TRUE,INDEX(ISNA(A1:Z1),0),0)-1,):Z1),0),0)),"#N/A")))
If you want to check always from first cell eg; A1, you can simplify to:
=COUNTIF(A1:INDEX(A1:Z1,MATCH(1,INDEX(1-ISNA(A1:Z1),0),0)),"#N/A")
Adjust the ranges accordingly.
Regards,
Haseeb
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