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PrepTest 78, Game 4, Question 23



Summary
The content provides an in-depth analysis of a rule substitution question, focusing on finding an answer that perfectly replaces a specific condition without altering the original constraints of the game.
  • The correct answer must be true under the original rules and force W to be placed before K and L.
  • Answer choice A is identified as the perfect substitute because it meets both criteria by ensuring Z is the only letter that can precede W, thereby maintaining the original game's constraints.
  • Other answer choices (B, C, D, and E) fail to meet the criteria as they either do not enforce W's placement before K and L or alter the game's original constraints.
  • The analysis emphasizes the importance of understanding the original rules and the implications of each potential substitute to find the correct answer.
  • This detailed examination aids in developing strategic approaches to similar rule substitution questions on the GRE.
Chapters
00:00
Introduction to Rule Substitution
00:27
Criteria for the Correct Answer
01:31
Analysis of Answer Choices
01:33
Why Answer Choice A is Correct
03:31
Disqualification of Other Answers