All engineers are technical. Some technical people are artists. Some artists are not engineers. Based on this, which is definitely true?
Answer: B
Since all engineers are technical, it means at least some technical people must be engineers.
Q.2Hard
No metal is a liquid at room temperature. All liquids at room temperature are transparent. Some metals are not transparent. Which conclusion is definitely false?
Answer: B
Since no metal is a liquid at room temperature, the statement 'Some liquids are metals' is definitely false.
Q.3Hard
All A are B. All B are C. Some C are not D. No D is E. Which of the following must be true?
Answer: A
Since all A are B, all B are C, and some C are not D, it follows that some A are not D (as some of C are not D).
Q.4Hard
Some intelligent people are not ambitious. All ambitious people are successful. Can we conclude that some intelligent people are not successful?
Answer: B
Although some intelligent people are not ambitious, this doesn't mean they are not successful through other means.
Q.5Hard
All teachers are knowledgeable. Some knowledgeable people are not wise. Which statement must be true?
Answer: D
While some knowledgeable people are not wise, we cannot determine if the non-wise ones include teachers or not.
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Q.6Hard
All fruits are nutritious. Some nutritious foods are expensive. No expensive food is readily available. Which must be true?
Answer: D
While all fruits are nutritious, only some nutritious foods are expensive, so we cannot determine which fruits are expensive and therefore unavailable.
Q.7Hard
All mountains are geographical features. Some geographical features are tourist attractions. All tourist attractions generate revenue. Can we conclude some mountains generate revenue?
Answer: B
Although mountains are geographical features and some geographical features are tourist attractions, we cannot confirm that the mountains which are geographical features are among those that are tourist attractions.
Q.8Hard
All organic produce is healthy. Some healthy foods are affordable. No expensive item is affordable. Which conclusion is correct?
Answer: B
Some healthy foods are affordable. Since all organic produce is healthy, some organic produce could be among those affordable healthy foods, hence some organic produce may not be expensive.
Q.9Hard
All renewable energy sources are sustainable. Some sustainable practices are costly. All costly practices require government support. Can we say all renewable energy sources require government support?
Answer: B
While all renewable sources are sustainable, only some sustainable practices are costly. We cannot establish that all renewable energy sources are among those costly practices.
Q.10Hard
No pessimist achieves success. All lazy people are pessimists. Some lazy people study. What about those who study?
Answer: B
Some lazy people study, and all lazy people are pessimists, and no pessimist achieves success. Therefore, some who study may not achieve success.
Q.11Hard
All novels are literary works. Some literary works are award-winning. No award-winning work is forgotten. Can we conclude some novels are not forgotten?
Answer: B
While some literary works are award-winning and no award-winning work is forgotten, we cannot confirm that the novels which are literary works are among those award-winning works.
Q.12Hard
No artist is a businessman. All businessmen are ambitious. Conclusions: I. No artist is ambitious. II. Some ambitious people are not artists. Which conclusion(s) follow?
Answer: B
From premises, we know artists ≠ businessmen, and all businessmen are ambitious. This means ambitious people exist (businessmen), but we cannot conclude all ambitious are businessmen. So II follows (some ambitious are not artists). I doesn't follow as non-businessmen artists could be ambitious.
Q.13Hard
Some vegetarians are athletes. All athletes maintain discipline. Conclusions: I. Some vegetarians maintain discipline. II. All vegetarians are disciplined. Which conclusion(s) follow?
Answer: A
Some vegetarians are athletes, and all athletes maintain discipline. Therefore, some vegetarians (the athlete ones) maintain discipline. I follows. II doesn't follow as not all vegetarians are athletes.
