Question 981093: Find the number of different ways in which four flags can be displayed on a flagpole one above the other, if there are 10 flags available.
Thanks!
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! Four slots A,B,C,D
10 flags to choose from for slot A
9 for slot B
8 for slot C
7 for slot D
10*9*8*7 = 5,040
If order matters, then there are 5,040 ways
If order doesn't matter, then there are 5,040/24 = 210 ways
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