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June 2007, Game 4, Question 21

The content provides a detailed walkthrough of solving a specific GRE question, focusing on applying given conditions to deduce the correct answer.
  • Introduces a new condition requiring all three centers to fill three blanks with specific items, leading to a logical deduction process.
  • Explains the necessity for Centers 1 and 2 to perform identical actions due to shared conditions, and the implications for what Center 3 can do.
  • Utilizes process of elimination based on the rules and conditions provided to narrow down the possible answers.
  • Concludes with the method of going through each answer choice with the deduced information to find the one that could be true, ultimately identifying the correct answer.
Introduction to the New Condition
Logical Deductions from Conditions
Process of Elimination for Answer Choices