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Exercise 5.1
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Chapter 5
Exercise 5.1
Part I
1. Major term: things that produce intense gravity.
2. Major term: insects that should be killed.
3. Major term: environmentally produced diseases.
4. Major term: good witnesses.
5. Major term: good absorbers of ultraviolet rays.
Part II
1. All B are D.
EIO-4
Valid, Boolean and Aristotelian
3. All W are M.
4. No M are F.
5. Some M are I.
Exercise 5.1
Part III
1. Some M are not P.
2. No P are M.
3. All M are P.
4. Some M are P.
5. All P are M.
6. No P are M.
7. All M are P.
8. No P are M.
9. Some M are not P.
10. Some P are not M.
Exercise 5.1
Part IV
1. No dogmatists are scholars who encourage free thinking.
2. All lock step ideologues are people incapable of objectivity.
3. All teenage suicides are tragic occurrences.
4. Some viruses are not things capable of replicating by themselves.
5. No legally enforceable documents are guarantees of marital happiness.
Part V
Exercise 5.2
Part I
1. All C are U.
U
Exercise 5.2
6. All I are C.
7. No P are I.
8. Some I are not M.
9. Some A are P.
I
I
I
P
M
X
P
X
Exercise 5.2
11. All C are P.
P
O
S
S
P
Exercise 5.2
Part III
Exercise 5.3
Part I
1. All M are P.
2. Some P are M
M
M
S
P
X
Exercise 5.3
Some M are S.
13. All P are M.
Exercise 5.3
15. No M are P.
16. No M are P.
17. No M are P.
19. All P are M.
M
M
M
Exercise 5.3
Part II
1. Some N are C.
4. Some C are not M.
C
C
M
Exercise 5.3
Part III
Exercise 5.4
Part I
1. Some non-T are M. (conv., obv.) Some M are not T.
2. All S are R. All S are R.
P
6. No F are D. No F are D.
Exercise 5.5
Part I
1. All scientists who theorize about the nature of time are physicists.
4. All people who wrote the Declaration of Independence are people who had a big impact on
8. Some interest expenses are not tax-deductible expenses.
Exercise 5.5
11. All places icebergs are present are places threats to shipping exist.
Invalid, undistributed middle
Exercise 5.6
Part I
1. Premise missing: Some police chiefs fix parking tickets.
2. Conclusion missing: Plagiarism deserves to be punished.
Exercise 5.6
7. All messages from friends are messages that are welcome.
10. All times administrative salaries have exploded are times attempts to reduce tuition have
Part III
1. No organizations that make alcohol readily available and acceptable are organizations that
