There are 5040 permutations possible
Order matters because the positions are different.
(A,B,C,D) is different from (B,A,C,D) because the first means person A is the assistant while the second means person B is the assistant.
We have 10 choices for the first slot, 9 for the second, 8 for the third, and 7 for the fourth. We count down the values because a person cannot be reselected to serve multiple positions simultaneously.
Multiply out those values to get 10*9*8*7 = 5040
There are 5040 permutations possible.
As an alternative, you can use the nPr permutation formula with n = 10 and r = 4 like so
We get the same answer as before.
This is the answer because:
1) The difference between combinations and permutations is the ordering of each term.
Combinations - the order doesn't matter
Permutations - the order matters.
An example of this is, if you enter the number combination 5324 into your locker/cabinet, it won't open up because it is a different ordering and needs a specific combination which means it's permutation.
2) In this situation, the order doesn't not matter since they just want different ways to select an assistant, a representative, a treasurer, and a recorder.
Hope this helps! :D
11 feet 6 inches and 8 feet 6 inches
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