In how many ways the letters of the word "soon" can be rearranged?
If we have four distinct letters, we can arrange them in different ways. However, since two of the letters in the word "soon" are the same, if we swapped them over, we would have the same word.
Hence, we do not have 24 possibilities since this was considering each of these different permutations as unique. Instead, we have half as many. Hence, the number of possible rearrangements is 12.