Final answer:
The number of different permutations of the letters in the word 'CASA' is 24.
Explanation:
The word 'CASA' has 4 letters. To find the number of different permutations, we use the formula for permutations of a set of n objects: n! (n factorial). In this case, n = 4, so there are 4! = 432*1 = 24 different permutations of the letters in the word 'CASA'.
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