Bonesaw was a Math major when he graduated with his bachelors degree from the University of Woolamaloo. He wanted to get his masters in Geocaching Puzzle Solving, but after meeting with the Philosophy Department he decided to look into medicine to find a cure for the “pining for the fjords” syndrome found in the Norwegian Blue Parrot.
Here is a puzzle that he needed to solve to help find a cure for this deadly condition. There is a four-digit number ABCD, where A, B, C, D each represents a different digit from 1 to 9.
If ABCD is divisible by 13, BCDA is divisible by 11, CDAB is divisible by 9, and DABC is divisible by 7, what is the original number ABCD?
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