Question 1
Among S, R, X, Y, Z, Q, U, the following comparisons are known: U is heavier than Q. Q is heavier than X. X is heavier than R. R is heavier than Z. Z is heavier than S. S is heavier than Y. Who is the 3rd tallest?
Chain of comparisons: U > Q > X > R > Z > S > Y. Therefore, the 3rd tallest is X.