Introduction to Logic solution – dentify the rule that is broken by invalid syllogisms

EXAMPLE A

2. EAA-1

no m is p.

all s is m.

all s is p.

rule 5.

 

3. IAO-3

some m is p.

all m is s.

some s is not p.

rule 5.

 

4. OEO-4

some p is not m.

no m is s.

some s is not p.

rule 5.

 

5. AAA–3

all m is p.

all m is s.

all s is p.

rule 3.

 

6. IAI-2

some p is m.

all s is m.

some s is p.

rule 2.

 

7. OAA–3

some m is not p.

all m is s.

all s is p.

rule 3.

 

8. EAO-4

no p is m.

all m is s.

some s is not p.

rule 6.

 

9. OAI-3

some m is not p.

all m is s.

some s is p.

rule 5.

 

10. IEO–1

some m is p.

no s is m.

some s is not p.

rule 3.

 

11. EAO-3

no m is p.

all m is s.

some s is not p.

rule 6.

 

12. AII–2

all p is m.

some s is m.

some s is p.

rule 2.

 

13. EEE–1

no m is p.

no s is m.

no s is p.

rule 4.

 

14. OAO-2

some p is not m.

all s is m.

some s is not p.

rule 3.

 

15. IAA–3

some m is p.

all m is s.

all s is p.

rule 3.

 

EXAMPLE B

2. all m is p.

all s is m.

all s is p.

valid.

 

3. no p is m.

some s is not m.

some s is not p.

rule 4.

 

4. some m is not p.

all m is s.

some s is not p.

valid.

 

5. all p is m.

all m is s.

some s is m.

rule 6.

 

6. some p is not m.

all s is m.

all s is p.

rule 5.

 

7. some m is p.

some s is m.

some s is p.

rule 2.

 

8. some m is not p.

some s is m.

some s is not p.

rule 2.

 

9. all m is p.

all s is m.

all s is p.

valid.

 

10. some m is not p.

all m is s.

some s is not p.

valid.

 

EXAMPLE C

2. all p is m.

all s is m.

all s is p.

rule 2.

 

3. all m is p.

some m is not s.

some s is not p.

rule 3.

 

4. all m is p.

all m is s.

some s is p.

rule 6.

 

5. all p is m.

all m is s.

all s is p.

rule 3.

 

6. no m is p.

some s is not m.

some s is p.

rule 5.

 

7. all m is p.

all s is m.

all s is p.

valid.

 

8. no m is p.

all m is s.

no s is p.

rule 3.

 

9. all m is p.

no s is m.

no s is p.

rule 3.

 

10. all m is p.

all s is m.

all s is p.

valid.

 

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