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The Friar's Puzzle

Answer :

The five hundred silver pennies might have been placed in the four bags, in accordance with the stated conditions, in exactly 894,348 different ways. 

If there had been a thousand coins there would be 7,049,112 ways. 
It is a difficult problem in the partition of numbers. 

I have a single formula for the solution of any number of coins in the case of four bags, but it was extremely hard to construct, and the best method is to find the twelve separate formulas for the different congruences to the modulus 12.

Medieval Brain Teasers