Quantitative Comparison

### Section: Quantitative Comparison Estimated study time: 45 minutes Content: Quantitative Comparison (QC) questions are unique to the GRE and require a different approach than standard problem-solving. In the shortened GRE General Test (September 2023+), the two Quantitative Reasoning sections total 27 questions (12 in section 1 / 21 minutes; 15 in section 2 / 26 minutes). QC questions appear in both sections and are typically the first question type within each Quant section. An on-screen calculator is available for all Quant questions. Each QC question presents two quantities — Quantity A and Quantity B — and asks you to choose among four options: (A) Quantity A is greater; (B) Quantity B is greater; (C) both are equal; or (D) the relationship cannot be determined from the information given. The answer is always one of these four choices. Answer choice D ("cannot be determined") is correct when the comparison depends on information not provided — particularly when the quantities can be greater, less than, or equal depending on different values of an unspecified variable. A key GRE strategy: if you can find one case where A > B and another case where A < B, the answer is D. You only need two different scenarios that produce different comparisons to eliminate A, B, and C. Strategies for QC questions: First, look for ways to simplify by performing the same operation on both quantities simultaneously. You may add, subtract, multiply (by a positive number), or divide (by a positive number) both sides — just as in algebra, maintaining the comparison direction.…