SOLUTION: Determine the number of permutations (arrangements) possible of 10 things taken 2 at a time.

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Question 855309: Determine the number of permutations (arrangements) possible of 10 things taken 2 at a time.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

10C2 = 45 ways =  = 10%21%2F%282%218%21%29