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Common DS Mistakes

The content provides an in-depth exploration of common mistakes made on GMAT data sufficiency questions, offering insights and strategies to avoid these pitfalls.
  • Understanding the direction of logic is crucial; avoid backwards logic where the prompt's truth is assumed to validate the statements.
  • Do not automatically assume all numbers are positive integers; consider all numerical possibilities including fractions and negative numbers.
  • Be aware of mathematical exceptions, such as the unique properties of certain numbers, which can be pivotal in answering data sufficiency questions correctly.
  • Analyze each statement independently without carrying over information from one statement to the next to avoid confusion and incorrect conclusions.
  • Learning from mistakes is essential for improvement; always delve into the nature of the mistake to ensure it is not repeated.
Direction of Logic
Numerical Assumptions
Mathematical Exceptions
Independent Analysis of Statements