How to nail every Data Sufficiency question with just 3 steps.

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This depends on a combination between logic and technique. Almost all Data Sufficiency question revolves around logic, so the first step is to go over every Data Sufficiency questions and take notes of the different logical principles used in them and which clues ‘gave them away’. As for the technique, most mistakes are made because test takers read both statements together or read one and then add the other, which makes it hard for them to separate between them. The right technique is to read the first one while completely ignoring (even hiding) the second one, and eliminate the answer choices according to what we find. Next, we read just the second one while ignoring the first one. And only if both answers (A) and (B) are eliminated, should we read both statements together.

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