Statements: 1. No A is B. 2. Some B are C. Conclusions: I. Some C are not A. II. Some A are not C. Which conclusion(s) logically follow? MCQ with Answer and Explanation
Statements:
1. No A is B.
2. Some B are C.
Conclusions:
I. Some C are not A.
II. Some A are not C.
Which conclusion(s) logically follow?
A. Only conclusion I follows
B. Both I and II follow
C. Neither I nor II follows
D. Only conclusion II follows
Answer: Option A
Solution (By JKSSB Mock Tests)
Since some B are C, and no B is A, the portion of C that is B can never be A. Thus, some C are definitely not A (Conclusion I). However, we do not know if the rest of A interacts with the rest of C, so Conclusion II does not follow.
Statement:
Regular exercise is essential for maintaining good cardiovascular health.
Conclusions:
I. People who do not exercise will definitely suffer from heart diseases.
II. A healthy heart requires physical activity.
Which conclusion(s) logically follow?
Explanation:
The statement says exercise is 'essential' (necessary) for good cardiovascular health, which directly supports Conclusion II. It does not state that lack of exercise is the sole cause of heart diseases (people might have bad health without having a specific 'disease'), making Conclusion I an extreme assumption.
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