Question 63
MediumOriginal questionAssume the statements are true.
Statements: Some guavas are figs. All figs are dates.
Conclusions:
I. Some guavas are dates.
II. No guava is a date.
Show the answer and explanation
CorrectNot quiteAnswer A
Correct answer: A
Explanation
The guavas that are figs are dates, so some guavas are dates: I follows.
Conclusion II contradicts I, so it is definitely false.
Either-or needs neither conclusion to follow alone. Here I follows, so the answer is only I.
Worth noting
A complementary pair is not automatically 'Either I or II'. Check first whether one of them follows by itself.
- Concept
- Either-or applies only when neither follows alone
- Typical timeTypical
- 70 s
- Your timeYours
- —
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