QUESTION TEXT: Nearly all mail that is correctly addressed…
QUESTION TYPE: Must Be True
FACTS:
- Correctly addressed mail only takes longer than two days if it is damaged.
- Yet most mail takes three days or more.
ANALYSIS: We can conclude that most mail is either damaged or incorrectly addressed. And most of that mail must be incorrectly addressed, because only a small portion of correctly addressed mail is late (and therefore damaged). So almost all of the late mail must have been incorrectly addressed.
___________
- This is unlikely to be true, since most correctly addressed mail arrives within two days, damaged or not.
- This doesn’t have to be true. Some incorrectly addressed mail might arrive within two days.
- We don’t know. We’re not told how often mail is late if it’s incorrectly addressed.
- CORRECT. Only a small proportion of correctly addressed mail fails to arrive within two days. So it must be true that quite a lot of mail is incorrectly addressed, because most mail takes longer than two days.
- This is false. Most mail takes over two days to arrive.
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