In this case,we have to use

=SUMPRODUCT(1/COUNTIF(SELECT RANGE,CRITERIA))

 

Note:-

HERE,

Range and Criteria are same,hence Formula actually is

=SUMPRODUCT(1/COUNTIF(SELECT RANGE,SELECT RANGE))

EXAMPLE

 

Counting Unique Values in Excel - Count Formulas

 

 Download file and try

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years. He also provides Accounts Tax GST Training in Delhi, Kerala and online.