Answer:
R and S
Answer the questions on the basis of the information given below. A map representing countries R, S, W, X, Y and Z is to be drawn. Adjacent countries cannot be the same color on the map. The only countries adjacent to each other are as follows : * R, S, X and Y are each adjacent to W. * X is adjacent to Y. *R and S are each adjacent to Z.
Which of the following is a pair of countries that can be the same color as each other?