Why is order important in permutations?

1 Answer
Apr 14, 2015

It is important in permutations by the definition of the word "permutation". If we ignore order, then we are discussing / choosing "combinations".

Given set #{a, b, c, d}#, if we count #ab# and #ba# as the same, then we are counting combinations.
If they are counted as different, then we are counting permutation.