Solution – Challenge 49 – Whether a Word is Isogram or Not

Below is a possible solution to the challenge – Challenge 49 – Whether a Word is Isogram or Not

Use following formula –

=IF(SUMPRODUCT(–(LEN(A1)-LEN(SUBSTITUTE(UPPER(A1),CHAR(ROW($65:$90)),""))>1))
=1,"Not Isogram","Isogram")