Question: Explain why entering the formula =SUM(1/COUNTIF(Info,Info)) will yield the number of unique entries in the range Info. Apply this formula to the data in the

Explain why entering the formula =SUM(1/COUNTIF(Info,Info)) will yield the number of unique entries in the range Info. Apply this formula to the data in the file named Unique.xlsx and verify that it returns the number of unique entries.

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