SOLUTION: How many permutations of two letters are possible from the four letters a,b,c,d?

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Question 512722: How many permutations of two letters are possible from the four letters a,b,c,d?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How many permutations of two letters are possible from the four letters a,b,c,d?
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4P2 = 4!/(4-2)! = 4*3 = 12 permutations
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Cheers,
Stan H.
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