Directions: In the question below, some statements are given followed by two conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts.
Statements:
All laptops are devices.
Only a few cameras are devices.
No camera is a tripod.
Conclusions:
I. No laptop is a tripod.
II. All cameras can never be devices.
Correct Answer :
Only conclusion II follows
Solution :
The correct option is Only conclusion II follows.
Step-by-step analysis of the given statements:
1. All laptops are devices: The set of all laptops lies entirely inside the set of devices.
2. Only a few cameras are devices: The statement "Only a few" carries a dual meaning: "Some cameras are devices" AND "Some cameras are NOT devices".
3. No camera is a tripod: The set of cameras and the set of tripods are completely disjoint (they do not share any elements).
Evaluation of Conclusions:
Conclusion I: No laptop is a tripod.
While all laptops are devices and no camera is a tripod, there is no statement that restricts laptops from interacting with tripods. A laptop might or might not be a tripod. Since it is a possibility and not a certainty, Conclusion I does not logically follow.
Conclusion II: All cameras can never be devices.
Since "Only a few cameras are devices" strictly implies that a part of cameras is definitely outside the set of devices, it is impossible for 100% of cameras to ever become devices. Thus, "All cameras can never be devices" is a definite truth and logically follows.
Therefore, Only conclusion II follows.
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