Statement: She is a professional dancer. Conclusions: I. She has received formal training. II. She performs on stage.
A. Only II follows
B. Both I and II follow
C. Neither I nor II follows
D. Only I follows
Answer: Option C
Solution (By JKExamLibrary)
Neither necessarily follows. A professional dancer may be self-taught; not all professional dancers perform on stage (some teach). So, neither is certain.
Statements:
1. All actors are handsome.
2. John is handsome.
Conclusions:
I. John is an actor.
II. John is not an actor.
Which conclusion(s) logically follow?
Explanation:
John is in the 'handsome' category, but we do not know if he is inside the 'actor' sub-category or outside it. Therefore, neither is definite. However, since he must either be an actor or not an actor, the 'either/or' condition applies.
Statements:
1. No monkey is a chimpanzee.
2. Some chimpanzees are gorillas.
Conclusions:
I. Some gorillas are not monkeys.
II. Some monkeys are not gorillas.
Which conclusion(s) logically follow?
Explanation:
Since some gorillas are chimpanzees, and no chimpanzee is a monkey, those specific gorillas can never be monkeys. Thus, some gorillas are not monkeys (I follows). We don't know the relationship between the rest of the gorillas and monkeys, so II doesn't follow.
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