Read the following information carefully and answer the question below. There are six children playing football, namely, Z, Y, X, W, V and U. 1. Z and V are brothers. 2. U is the sister of V. 3. X is the only son of Z’s uncle. 4. Y and W are daughters of the brother of X’s father. How many male players are there?
1.3
2.4
3.5
4.6
Answer:1