Question 387040: in how my ways can 10 instructors be assigned to 10 sections of a course in math
Answer by Jk22(389)   (Show Source):
You can put this solution on YOUR website! Suppose the section are ordered, for the 1st there are 10 possibilities to choose a prof, for the 2nd 9, downto 1, which is 10! possibilities, 10 factorial is 3'628'800=10*9*8*7*6*5*4*3*2
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