Question:

What is the sum of the heights of three brothers A, B, and C? Statement I: B is the tallest and his height is 163 cm.
Statement II: A is the shortest and his height is 154 cm. To answer the question:

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In data sufficiency, check if exact value can be uniquely determined — not estimated.
Updated On: Feb 27, 2026
  • Statement I alone is sufficient
  • Statement II alone is sufficient
  • Both statements I and II together are sufficient
  • Both statements I and II even together are not sufficient
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The Correct Option is D

Solution and Explanation

Concept: Data sufficiency problems test whether the given data is enough to determine the required value. Explanation: From Statement I: B is tallest = 163 cm. No information about A and C → Not sufficient. From Statement II: A is shortest = 154 cm. No information about B and C → Not sufficient. Even combining both statements: We only know tallest and shortest heights. Height of C is unknown, so total sum cannot be determined. Hence, data is insufficient.
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