INSTRUCTIONS
Put each of the following syllogisms into standard form, name its mood and figure:
PROBLEMS
1. Some reformers are fanatics, so some idealists are fanatics, because all reformers are idealists.
2. Some philosophers are mathematicians; hence some scientists are philosophers, because all scientists are mathematicians.
3. Some mammals are not horses, for no horses are centaurs, and all centaurs are mammals.
4. Some neurotics are not parasites, but all criminals are parasites; it follows that some neurotics are not criminals.
5. All underwater craft are submarines; therefore no submarines are pleasure vessels, because no pleasure vessels are underwater craft
1. All reform are idealist
Some idealist are fanatics
therefore, some reform are fanatics
All-1
Valid
2. Some philosoperare mathematician
All scientist are mathematician
Therefore, all scientist are philosopher
IAA- 2
invalid
3. No horses are centaurs
Alll centaurs are mammals
Therefore, some mammals are not horses
EAO –4
Invalid
4. Some neurotics are not parasites
All criminals are parasites
Therefore, some neurotics are not criminals
IAI- 25.
Valid
5.
No pleasure vessels are underwater craft.
All underwater craft are submarines
Therefore, No submarines are pleasure vessels
EAE-4
Invalid
INSTRUCTIONS Put each of the following syllogisms into standard form, name its mood and figure: PROBLEMS 1. Some reforme...
INSTRUCTIONS Put each of the following syllogisms into standard form, name its mood and figure: PROBLEMS 1. Some reformers are fanatics, so some idealists are fanatics, because all reformers are idealists. 2. Some philosophers are mathematicians; hence some scientists are philosophers, because all scientists are mathematicians. 3. Some mammals are not horses, for no horses are centaurs, and all centaurs are mammals. 4. Some neurotics are not parasites, but all criminals are parasites; it follows that some neurotics are not...
INSTRUCTIONS For each of the following arguments, a. Translate the argument into standard form. b. Name the mood and figure of its standard-form translation. c. Test its validity using the rules and mood. If it is valid, give its traditional name. d. If it is invalid, name the fallacy it commits. Question 5. All syllogisms having two negative premises are invalid. Some valid syllogisms are sound. Therefore some unsound arguments are syllogisms having two negative premises.
INSTRUCTIONS For each of the following arguments, a. Translate the argument into standard form. b. Name the mood and figure of its standard-form translation. c. Test its validity using the rules and mood. If it is valid, give its traditional name. d. If it is invalid, name the fallacy it commits. 2. … no names come in contradictory pairs; but all predicables come in contradictory pairs; therefore no name is a predicable. —Peter Thomas Geach, Reference and Generality (Ithaca, NY:...