Question:

Which of the five trains A, B, C, D and E is the best?
Statement I - D train is better than E train, A train and C train but not as good as B train.
Statement II - D train is better than C train but not as good as B which is better than E train.

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In data sufficiency problems, analyze how the given statements complement each other and whether they provide enough information to draw a conclusion.

Updated On: July 22, 2025

If the question can be answered with the help of statement I alone.
If the question can be answered with the help of statement II alone.
If both, statement I and statement II are needed to answer the question.
If the question cannot be answered even with the help of both the statements.

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The Correct Option is C

Solution and Explanation

From Statement I: D is better than E, A, and C but not as good as B. So we know the order is: B>D>E, A, C.
This gives us partial information, but we don’t know where A and C fit in the ranking compared to B and D. From Statement II:
D is better than C but not as good as B, and B is better than E.
This gives a different partial ranking: B>D>C>E.
However, it still doesn’t tell us how A fits in the ranking.
When we combine both statements, we can conclude that the best train is B, since we know B is better than D from both statements. Thus, both statements are needed to answer the question.

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