Final answer:
Harry can make 120 different outfits for the days he is not in class.
Step-by-step explanation:
The subject of question is Mathematics.
To calculate the number of different outfits Harry can make for the days he is not in class, we need to multiply the number of options for each clothing item together. Harry owns 3 pairs of pants, 4 t-shirts, 2 sweaters, 5 pairs of socks, and 1 pair of shoes.
The total number of outfits can be found by multiplying the number of options for each item: 3 pants x 4 t-shirts x 2 sweaters x 5 socks x 1 shoes = 120 different outfits.