# Permutation & combination

Question asked by: gayathri

Asked on: 17 Dec 2008

5 letters A,B,C,D,E and 5 recipients A1,B1,C1,D1,E1

So you could send A to B1, B to C1, C to D1, D to E1, E to A1 and so on, this hint should be all you need to work out the answer.

By: knowitall

Replied at: 21 Dec 2008

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