Answer:
12
Step-by-step explanation:
red hat, black shirt, black pants
red hat, white shirt, black pants
red hat, striped shirt, black pants
black hat, black shirt, black pants
black hat, white shirt, black pants
black hat, striped shirt, black pants
that is six different combinations without the use of the pair of blue pants, thus you should be able to just do all those combinations over again with just blue pants leading to a total of 12 combinations. I think lol
