The GATE Grind

GATE 2023 IN – Question 6

General Aptitude · Analytical Aptitude: Logical Reasoning and Deduction · 2 marks · MTA

Residency is a famous housing complex with many well-established individuals among its residents. A recent survey conducted among the residents of the complex revealed that all of those residents who are well established in their respective fields happen to be academicians. The survey also revealed that most of these academicians are authors of some best-selling books. Based only on the information provided above, which one of the following statements can be logically inferred with certainty?

  1. Some residents of the complex who are well established in their fields are also authors of some best-selling books.
  2. All academicians residing in the complex are well established in their fields.
  3. Some authors of best-selling books are residents of the complex who are well established in their fields.
  4. Some academicians residing in the complex are well established in their fields.

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Correct answer: MTA

Explanation

The final official key awards **marks to all**. For the literal premises, the established residents form a nonempty subset of resident academicians, so D follows. Most academicians being authors does not guarantee intersection with the established subset; the converse in B also fails. Scoring follows the official MTA decision.