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Railways PYQCBT 1 2016

RRB NTPC · Question 2

Read the statements and answer the question based on it. Statements: 1. Some mammals are extinct and some are critically endangered. 2. All dinosaurs are extinct. 3. Some reptiles are critically endangered and some are already extinct. Which option logically follows the given statements? A. All dinosaurs are mammals B. There are no reptiles that are out of the danger of extinction. C. No dinosaurs are critically endangered. D. Some reptiles are dinosaurs who are extinct.

  1. D

  2. C

  3. B

  4. A

Show answer & explanation

Answer: (B) C

Explanation

All dinosaurs are extinct, and a species that is already extinct cannot be critically endangered. So 'No dinosaurs are critically endangered' follows. The statements do not link dinosaurs with mammals or reptiles, and only some reptiles are said to be endangered.