This document discusses data sufficiency reasoning questions. It provides examples of 5 questions with explanations of the type of data provided in statements I and II and the correct answer. For example, one question asks who scored highest among 5 people. Statement I provides part of the ranking, and statement II provides the rest. Together the statements are sufficient but neither alone, so the answer is 5. The document aims to help understand the concept of data sufficiency and practice answering questions determining if data in 1 or both statements is sufficient to answer the given question.