There are 11 letters in the word "wisconsin," and you can rearrange them to form 9-letter strings. To find the total number of 9-letter strings that can be formed, you can use the permutation formula, which is:
(n!)/(r!(n-r)!)
Where:
n = the number of items (in this case, the number of letters in the word "wisconsin")
r = the number of items chosen at a time (in this case, 9 letters)
Plugging in the values, you get:
(11!)/(9!(11-9)!) = (1110987654321)/(98765432121) = 330
Therefore, there are 330 different 9-letter strings that can be formed by rearranging the characters in the word "wisconsin."