Ok, At least six (intelligent, have degree's etc, and are old) adults have tried our 13 years old's homework... Question is: 'A' divided into 'HAPPY' = 'XMAS' or I suppose 'A' * 'XMAS' = 'HAPPY' Each letter stands for a different number. Apparently there may be more than one answer, but we can't find any!!! Any clues would be appreciated. Best Regards.