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A question is followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and select the most appropriate answer. Question: Five trees, S, M, N, O and A, are of different heights. Which among them is the tallest tree? Statements: (I) N is taller than A. A is taller than M. (II) S is taller than M. S is shorter than O.
Data in statements I and II together are not sufficient to answer the question.
Data in statements I and II together are sufficient to answer the question.
Data in statement I alone is sufficient to answer the question while data in statement II is not.
Data in statement II alone is sufficient to answer the question while data in statement I is not.
Data in statements I and II together are not sufficient to answer the question.
Always check if the tallest entity can be uniquely identified. If any tree is not mentioned in relation to the others, or if multiple candidates remain, the data is insufficient.
Always check if the tallest entity can be uniquely identified. If any tree is not mentioned in relation to the others, or if multiple candidates remain, the data is insufficient.
Analyze Statement I
Given N > A and A > M. Combining these, we get the order N > A > M. N is the tallest of these three, but S and O are unknown.
Analyze Statement II
Given S > M and O > S. Combining these, we get the order O > S > M. O is the tallest of these three, but N and A are unknown.
Evaluate Combined Data
Even after combining I and II, we know N > A > M and O > S > M. We do not have any relationship between {N, A} and {O, S}. Both N or O could be the tallest.
B: Incorrect because we cannot establish a relationship between N/A and O/S. C: Incorrect because Statement I only covers 3 trees. D: Incorrect because Statement II only covers 3 trees.
A is correct because the provided statements do not establish a link between the two groups (N, A) and (O, S), making it impossible to determine who is the tallest among all five.
In data sufficiency, if you see two disjoint sets of variables, check if there is a common link (e.g., M is present in both). If no link connects all variables into a single chain, the answer is usually insufficient.
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