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Syllogism and Logical Reasoning Flashcards

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

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  1. Statements: All birds can fly. Penguins are birds. Conclusions: I. Penguins can fly. II. Some birds are penguins. Which conclusion(s) follow strictly from the given statements?

    Answer: Both I and II follow

    Given the stated premises (not real-world facts), all birds can fly and penguins are birds, so penguins can fly; converting the second premise gives some birds are penguins.

  2. Statements: Some doctors are engineers. All engineers are scientists. Conclusions: I. Some doctors are scientists. II. All scientists are engineers. Which conclusion(s) follow?

    Answer: Only I follows

    Some doctors are engineers and all engineers are scientists, so some doctors are scientists; reversing 'all engineers are scientists' to 'all scientists are engineers' is invalid.

  3. Mohan walks 5 km north, then turns right and walks 3 km, then turns right again and walks 5 km. How far is he from the starting point?

    Answer: 3 km

    He travels north 5 km, east 3 km, then south 5 km, ending up 3 km east of the start.

  4. Statements: All keys are locks. No lock is a chain. Conclusions: I. No key is a chain. II. Some chains are not keys. Which conclusion(s) follow?

    Answer: Both I and II follow

    All keys are locks and no lock is a chain, so no key is a chain; this further implies some chains are not keys.

  5. If the day before yesterday was Thursday, what day will it be three days after tomorrow?

    Answer: Wednesday

    Day before yesterday = Thursday means today = Saturday; tomorrow = Sunday; three days after tomorrow = Wednesday.

  6. Statements: Some apples are oranges. No orange is a mango. Conclusions: I. Some apples are not mangoes. II. No apple is a mango. Which conclusion(s) follow?

    Answer: Only I follows

    Some apples are oranges and no orange is a mango, so those apples (that are oranges) are not mangoes, making Conclusion I valid; II is too broad.

  7. Statements: All rivers flow into the sea. The Amazon is a river. Conclusions: I. The Amazon flows into the sea. II. The sea contains river water. Which conclusion(s) follow strictly from the stated premises?

    Answer: Only I follows

    Conclusion I follows directly by universal application; Conclusion II requires an additional inference not stated in the premises.