If X × Y means X is the father of Y, Y - Z means Y is the sister of Z, and Z + W means Z is the brother of W, what is the relationship of X to W in X × Y - Z + W?
Answer: B. X is W's father
X × Y means X is the father of Y, Y - Z means Y is the sister of Z, and Z + W means Z is the brother of W, so X is W's father.