SOLUTION: how many different 2 letter arrangements can be selected from the set s,h,a,r,k?

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Question 1178920: how many different 2 letter arrangements can be selected from the set s,h,a,r,k?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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In all, there are 5 distinct letters in the set.


The number of 2-letter arrangements is  5*4 = 20.     ANSWER


      Notice that in this problem the order in 2-letter arrangements does matter.

Solved.

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Solved, answered and explained.