SOLUTION: five computers are to be wired linear network. How many permutations of the five computers are possible? please help, I have no idea on how to solve this, thank you.

Question 262660: five computers are to be wired linear network. How many permutations of the five computers are possible? please help, I have no idea on how to solve this, thank you.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The basic format is this:

Number of permutations = # of choices for first slot * # of choices for second slot * # of choices for third slot * # of choices for fourth slot * # of choices for fifth slot

Since we have 5 choices for the first position, 4 for the second (since 1 computer can't take up two spots), 3 for the third, 2 for the fourth, and 1 for the fifth, we get

Number of permutations = 5*4*3*2*1 = 120

So there are 120 different permutations.

You can choose to use the permutation formula, but you'll basically use this idea.
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