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PrepTest 78, Game 4, Question 21

The analysis of a GRE prep question reveals the logical sequencing required to solve a problem involving the placement of variables based on given conditions.
  • Introducing a new rule that K is immediately before Y necessitates rearranging other variables accordingly.
  • W must precede the KY block, and Z must come before KY, impacting the possible positions of other variables.
  • Analysis of answer choices in light of the new rule eliminates options until the correct arrangement is identified.
  • Through process of elimination and logical deduction, it is determined that Z being in the second position could be true.
Introduction of New Rule
Logical Deductions Based on New Rule
Analysis of Answer Choices
Identification of Correct Arrangement