Question 429521
To start with, we have a t-shirt, which is one color but 4 styles. Next we have a jacket, which are all the same style, but two different colors.  Thus we have 4 t-shirts X 2 jackets, or 8 different ensembles to choose from so far. Last we have trunks which come in 3 styles and 2 colors to choose from, or 6 different trunks.  Multiply this by the 8 different shirt/jacket combinations and we have 48 different shirt, jacket, and trunks combinations.

4X2X3X2=48