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June 2007, Game 4, Question 22



Summary
The analysis of a GRE prep question reveals the logical approach to solving a 'must be true' problem, focusing on the distribution of materials across centers with specific constraints.
  • The problem presents a scenario where Center 3 is assigned to process glass, which imposes restrictions on what the other centers can process.
  • Center 2 cannot process plastic, leading to the deduction that Center 1 must handle plastic in its extra space.
  • The solution involves deducing that Centers 1 and 2 must both process newsprint (n), as excluding it would lead to an untenable situation, leaving wood (w) or tin (t) for Center 3.
  • The correct answer for what Center 2 must process is newsprint (B), as it is the only option that meets all the given constraints and logical deductions.
Chapters
00:00
Understanding the Problem
00:04
Applying Constraints
01:18
Deductive Reasoning to Find the Solution