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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combination & permutation
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