the result is always a multiple of 9
as the sum of any 2 digits taken from the reverse number gives a transposition (ie a multiple of 9).
Posted By: SCC 26, Jun 16, 23:23:38
Reply to Message
Written & Designed By Ben Graves 1999-2025
as the sum of any 2 digits taken from the reverse number gives a transposition (ie a multiple of 9).
Posted By: SCC 26, Jun 16, 23:23:38
Written & Designed By Ben Graves 1999-2025