Question 10
MediumOriginal questionRead the statements as true, even if they conflict with commonly known facts, and decide which of the conclusions follows.
Statements: All roses are flowers. Some flowers fade quickly.
Conclusions: I. Some roses fade quickly. II. All flowers are roses.
Show the answer and explanation
Correct answer: D
Explanation
The flowers that fade quickly are only some of the flowers. Nothing says roses are among them, so conclusion I is possible but not certain.
Conclusion II reverses the first statement. 'All roses are flowers' allows plenty of flowers that are not roses, so it does not follow either.
Neither conclusion is forced by the statements.
Worth noting
A conclusion 'follows' only if it must be true whenever the statements are. Something that merely could be true is not enough, and that is what makes conclusion I fail.
- Concept
- Validity requires certainty, not possibility
- Typical timeTypical
- 80 s
- Your timeYours
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Ten questions from Syllogisms, at your own pace.