Having a good grasp of Data Sufficiency questions is critical for scoring well on the Quantitative section of the GMAT. Each Data Sufficiency problem consists of a question, often accompanied with some preliminary information, and two statements giving additional information.

Your task is to work out whether you can answer the question using the given information. Please note that you need not solve the problem right down to the answer.

Given below are the three most challenging types of DS questions:

TYPE I: Given Information Helps Simplify the Question

TYPE II: Non-Value Driven Questions

TYPE III: Answer-Choice Hierarchy

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