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Logical Reasoning: Deductive Logic Flashcards

6 cards from real AMCAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Logical Reasoning: Deductive Logic flashcards as text

  1. All roses are flowers. Some flowers are red. Which conclusion definitely follows?

    Answer: Some flowers are roses

    From 'All roses are flowers', it follows by conversion that 'Some flowers are roses'.

  2. No cats are dogs. All dogs are animals. Which is a valid conclusion?

    Answer: Some animals are not cats

    All dogs are animals and no dog is a cat. So those dogs (which are animals) are not cats — some animals are not cats.

  3. Statement: All pens are books. No book is a pencil. Conclusion I: No pen is a pencil. Conclusion II: Some books are pens.

    Answer: Both I and II follow

    All pens are books and no book is a pencil → no pen is a pencil (I). All pens are books → some books are pens by conversion (II). Both follow.

  4. If no M is P, and all S is M, what can be concluded?

    Answer: No S is P

    All S is M and no M is P. Since every S is an M, and no M is P, no S can be P.

  5. Statements: Some teachers are writers. All writers are poets. Conclusion: Some teachers are poets.

    Answer: True

    Some teachers are writers. All writers are poets. Those teacher-writers are also poets → some teachers are poets. True.

  6. All A are B. All B are C. No C is D. Conclusion: No A is D.

    Answer: Definitely true

    All A → B → C and no C is D. Since every A is a C, and no C is D, no A is D. Definitely true.