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688 is the best as it uses all 10 sets of 10 digits. I used an excel sheet with a count feature to ensure the correct number of digits. Column A had the values of the markers starting from A3. Columns B to K were used to hold the counts of each number from 0 to 9. Row 2 was used to count each column B to K to ensure each number did not exceed 10. B2 to K37 etc had the following formula added:

=LEN($A3)-LEN(SUBSTITUTE($A3,"0",""))

688 is the best as it uses all 10 sets of 10 digits. I used an excel sheet with a count feature to ensure the correct number of digits. Column A had the values of the markers starting from A3. Columns B to K were used to hold the counts of each number from 0 to 9. Row 2 was used to count each column B to K to ensure each number did not exceed 10. B2 to K37 etc had the following formula added:

=LEN($A3)-LEN(SUBSTITUTE($A3,"0",""))
where $A3 referred to each marker and "0" was changed to reflect each number used so K37 reads:
=LEN($A37)-LEN(SUBSTITUTE($A37,"9",""))

688 is the best as it uses all 10 sets of 10 digits. I used an excel sheet with a count feature to ensure the correct number of digits. Column A had the values of the markers starting from A3. Columns B to K were used to hold the counts of each number from 0 to 9. Row 2 was used to count each column B to K to ensure each number did not exceed 10. B2 to K37 etc had the following formula added: =LEN($A3)-LEN(SUBSTITUTE($A3,"0","")) where $A3 referred to each marker and "0" was changed to reflect each number used so K37 reads: =LEN($A37)-LEN(SUBSTITUTE($A37,"9",""))

688 is the best as it uses all 10 sets of 10 digits. I used an excel sheet with a count feature to ensure the correct number of digits. Column A had the values of the markers starting from A3. Columns B to K were used to hold the counts of each number from 0 to 9. Row 2 was used to count each column B to K to ensure each number did not exceed 10. B2 to K37 etc had the following formula added:

=LEN($A3)-LEN(SUBSTITUTE($A3,"0",""))

688 is the best as it uses all 10 sets of 10 digits. I used an excel sheet with a count feature to ensure the correct number of digits.

688 is the best as it uses all 10 sets of 10 digits. I used an excel sheet with a count feature to ensure the correct number of digits. Column A had the values of the markers starting from A3. Columns B to K were used to hold the counts of each number from 0 to 9. Row 2 was used to count each column B to K to ensure each number did not exceed 10. B2 to K37 etc had the following formula added: =LEN($A3)-LEN(SUBSTITUTE($A3,"0","")) where $A3 referred to each marker and "0" was changed to reflect each number used so K37 reads: =LEN($A37)-LEN(SUBSTITUTE($A37,"9",""))