Question: Who among P, Q, R, S and T is the lightest?Statements:I. R is heavier than Q and T but lighter than S.II. S is not the heaviest.

To answer the question, we need to analyze the given statements:

Statement I: R is heavier than Q and T but lighter than S. This statement tells us that S is heavier than R, and R is heavier than both Q and T. So, among P, Q, R, and T, R is not the lightest. Neither are S and Q.

Statement II: S is not the heaviest. This statement tells us that there is at least one person heavier than S. Since we know from Statement I that S is heavier than R, Q, and T, the only person who can be heavier than S is P.

So, P is the heaviest.

Since we know that P, S, and R are not the lightest and P is the heaviest, the lightest person can only be Q or T. However, the information given does not allow us to determine which one of Q or T is the lightest. Therefore, the question cannot be answered with the information provided.