SOLUTION: abelardo wants to create several different 7-charcater screen names. he wants to use arrangements of the first 3 letters of his first name (abe), followed by arrangements of 4 digi

Algebra ->  Permutations -> SOLUTION: abelardo wants to create several different 7-charcater screen names. he wants to use arrangements of the first 3 letters of his first name (abe), followed by arrangements of 4 digi      Log On


   

Question 280036: abelardo wants to create several different 7-charcater screen names. he wants to use arrangements of the first 3 letters of his first name (abe), followed by arrangements of 4 digints in 1984, the year of his birth. how many different screen names can he create in this way?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
With repeats:
7^7=823,543 ans.
Without repeats:
7*6*5*4*3*2*1=5,040 ans.