SOLUTION: How many four-letter "words" can be made from 6 letters "AEBWDP" if repetition of letters is allowed repetition of letters is not allowed

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Question 1116686: How many four-letter "words" can be made from 6 letters "AEBWDP" if
repetition of letters is allowed
repetition of letters is not allowed
Answer by ikleyn(52903) About Me  (Show Source):
You can put this solution on YOUR website!
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How many four-letter "words" can be made from 6 letters "AEBWDP" if 

repetition of letters is allowed         6%5E4     = 1296 ways;

                                         6 opportunities in each of 4 positions.



repetition of letters is not allowed     6%2A5%2A4%2A3 = 360 ways.

                                         6, 5, 4 and 3 opportunities in the 1-st, 2-nd, 3-rd and 4-th position, respectively.

Solved.