SOLUTION: Find the number of permutations of the first 8 letters of the alphabet taking 2 letters at a time. 56 336 6720 20160 Thanks so much

Question 1069296: Find the number of permutations of the first 8 letters of the alphabet taking 2 letters at a time.
56
336
6720
20160
Thanks so much
Found 2 solutions by KMST, ikleyn:
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
What they mean is the number of 2-character sequences
made with two different characters,
chosen from a set of 8 different characters.
You have choices for the first character.
For each of those choices,
you have left to choose from for the second character.
The possibilities , don't they?
So, you have possible sequences.
Answer by ikleyn(52797) (Show Source): You can put this solution on YOUR website!
.
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