1. valid No patrons of fast-food restaurants are health
food addicts. Consequently, none of them are
connoisseurs of fine desserts, since all connoisseurs
of fine desserts are health food addicts.
all connoisseurs of fine desserts are health food addicts
No patrons of fast-food restaurants are health
food addicts
No Patrons of FFR are Connoisseurs of fine food.
A C H
E P H
E P C
AEE 2
valid

2. Some intelligible statements are false, because
no meaningful ones are unintelligible and
some meaningful statements are not true.
some meaningful statements are not true statements
no meaningful statements are unintelligible statements
Some intelligible statements are false statements
Five terms, not three
But that;s invalid for I
Contrapose the conclusion:
Obvert both the conclusion and the minor premise:
Minor: all meaningful statements are intelligible statements
Conclusion: some intelligible statements are not true statements

3. all meaningful statements are intelligible statements
some meaningful statements are not true statements
all meaningful statements are intelligible statements
some intelligible statements are not true statements
O M T
A M I
O I T
OAO 3
Valid?
Two negative premises?
Negative conclusion? Negative premise?
Middle term distributed?
Anything distributed in the conclusion but not in the premise?