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Question

N is more intelligent than M. M is not as intelligent as Y. X is more intelligent than Y but not as intelligent as N. Who is the most intelligent of all?

This question was previously asked in
UPSSSC PET 2025 Question Paper (07-Sep-2025) (Shift-2)
The correct answer is
N

Intelligence Ranking: Step-by-Step Analysis

This question is a logic puzzle where we need to determine the order of intelligence among four people: N, M, Y, and X, based on the given comparisons. Let's break down each piece of information to find out who is the most intelligent.

Analyzing the Clues

We are given four statements about the intelligence levels:

  • 1. N is more intelligent than M. This can be written as: $ N > M $
  • 2. M is not as intelligent as Y. This means Y is more intelligent than M: $ Y > M $
  • 3. X is more intelligent than Y. This can be written as: $ X > Y $
  • 4. X is not as intelligent as N. This means N is more intelligent than X: $ N > X $

Combining the Comparisons

Now, let's combine these inequalities to establish a complete order:

  1. From statement 1, we know $ N > M $.
  2. From statement 2, we know $ Y > M $.
  3. From statement 3, we know $ X > Y $.
  4. Combining statement 3 ($ X > Y $) and statement 2 ($ Y > M $), we get a chain: $ X > Y > M $.
  5. From statement 4, we know $ N > X $.
  6. Now, let's combine the chain $ X > Y > M $ with the fact $ N > X $. We get the complete order of intelligence from most intelligent to least intelligent: $ N > X > Y > M $.

Identifying the Most Intelligent Person

Based on the combined order $ N > X > Y > M $, we can clearly see the ranking:

  • N is the most intelligent.
  • X is the second most intelligent.
  • Y is the third most intelligent.
  • M is the least intelligent.

Therefore, N is the most intelligent person among the four.

Final Answer Determination

The analysis shows that N possesses the highest level of intelligence compared to X, Y, and M.

  • Comparing N with X: $ N > X $
  • Comparing X with Y: $ X > Y $
  • Comparing Y with M: $ Y > M $

Putting it all together gives us the sequence: $ N > X > Y > M $. This confirms that N is indeed the most intelligent.

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