PU-MET : Panjab University MBA Entrance Exam with MCQ Answers 2024

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43.

all windows are doors. No door is wall

conlcusions :
1. No window is wall
2. No wall is door
A: Only 1 follows
B: Only 2 follows
C: Either 1 or 2 follows
D: Both 1 and 2 follow

The answer is: D

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Explanation

Let's analyze the given statements and conclusions using logical reasoning.

Statements:

  1. All windows are doors. → This means every window is also a door.
  2. No door is a wall. → This means doors and walls do not overlap.

Conclusions:

  1. No window is a wall.
    • Since all windows are doors (from statement 1), and no door is a wall (from statement 2), it follows that no window can be a wall.
    • Conclusion 1 is correct.
  2. No wall is a door.
    • This is directly given in statement 2: "No door is a wall" means the same as "No wall is a door."
    • Conclusion 2 is correct.

Final Answer:

Since both conclusions logically follow, the correct answer is:

D: Both 1 and 2 follow.