Answer:
Choices={SB,SR,MB,MR,LS,LM,XLB,XLR}
8 combined choices
Step-by-step explanation:
Combinations
We'll define two sets of options for the windbreaker jackets, one for the sizes and another for the colors. Being S=small, M=medium, L=large, and XL=extra large, then
Z={S,M,L,XL}
is the set of possible sizes for the windbreaker jackets. Now, being B=blue and R=red, the set of colors is
C={B,R}
The combined choices are found by the cartesian product of ZxC:
Choices={SB,SR,MB,MR,LS,LM,XLB,XLR}
Where MB, for example, is Medium-Blue
That is the sample space for all the possible combinations, there are 8 in total