Height ordering with partial information: Mukesh is taller than Suresh but shorter than Rakesh. Rakesh is taller than Harish but shorter than Amar. Who is the shortest?

Difficulty: Medium

Correct Answer: Cannot be determined

Explanation:


Introduction / Context:
The problem provides two chains that overlap only at Rakesh. We must find the shortest person, but some cross-comparisons are missing, leading to multiple consistent orders.



Given Data / Assumptions:

  • Suresh < Mukesh < Rakesh.
  • Harish < Rakesh < Amar.
  • No direct comparison between Suresh and Harish.


Concept / Approach:
Build allowable orders consistent with both chains. If the identity of the shortest varies across valid orders, the answer cannot be uniquely determined.



Step-by-Step Exploration:

Case 1: If Suresh < Harish, then Suresh may be the shortest.Case 2: If Harish < Suresh, then Harish may be the shortest.Both cases satisfy Suresh < Mukesh < Rakesh and Harish < Rakesh < Amar, so both are possible.


Verification / Alternative check:
Try sample numeric heights consistent with the inequalities. You can realize both “Suresh shortest” and “Harish shortest” assignments without violating the statements.


Why Other Options Are Wrong:

  • Mukesh: Always above Suresh and possibly above Harish.
  • Suresh or Harish individually: Either could be shortest depending on missing cross-comparison.
  • None of these: The intent is that uniqueness fails; the correct meta-answer is “Cannot be determined.”


Common Pitfalls:
Assuming unprovided comparisons (e.g., assuming Suresh < Harish) without justification.


Final Answer:
Cannot be determined

More Questions from Ranking Test

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion