SOLUTION: How many five-letter sequences are possible that use the letters q, u, a, k, e, s at most once each?

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Question 1113771: How many five-letter sequences are possible that use the letters q, u, a, k, e, s at most once each?
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


There are 6 letters; you are using 5 of them, and none can be repeated. So
6 choices for the 1st letter;
5 choices for the 2nd letter;
... etc.

Answer: 6*5*4*3*2 = 720