Answer:
The number of possible combinations of 6 hats chosen from 12 hats can be calculated using the combination formula:
C(12, 6) = 12! / (6! * (12 - 6)!) = 12! / (6! * 6!) = (12 * 11 * 10 * 9 * 8 * 7) / (6 * 5 * 4 * 3 * 2 * 1) = 924
Therefore, Fred has 924 possible combinations of 6 hats he can choose from the 12 hats he likes.