Both the Premises are Universal Negative (E - type).
No Conclusion follows from the two negative Premises.
First Premise is Universal Affirmative (A-type).
Second Premise is Particular Affirmative (I-type).
Some spinsters are teachers. ? All teachers are experienced.
I + A ? I-type of Conclusion "Some spinsters are experienced."
This is Conclusion II.
Conclusion I is Converse of it.
Some buses are four-wheelers. ? All four-wheelers are vans.
I + A ? I-type of Conclusion. "Some buses are vans".
This is Conclusion II.
Conclusion I is Converse of this Conclusion.
Some blue is red and All red is green. Therefore, some blue is green.
Clearly, no black is yellow. Thus, only Conclusions I and II follow.
First and third Premises are Particular Affirmative (I-type).
Second Premise is Universal Affirmative (A-type).
Some books are novels. ? All novels are magazines.
I + A ? I-type of Conclusion. "Some books are magazines."
It is Conclusion II.
Conclusions I and IV form Complementary Pair. Therefore, either Conclusion I or IV follows.
Both the Premises are Universal Affirmative (A?type).
All cycles are ducks. ? All ducks are swans.
A + A ? A?type of Conclusion "All cycles are swans."
Conclusion II is the Converse of it.
The first Premise is Universal Affirmative (A-type).
The second Premise is Particular Affirmative (I-type).
Most players are men. ? Some man are singers.
A + I ? No Conclusion
Conclusion I is Converse of the second statement.
All buses are houses. ? Some houses are lakes.
A + I ? No Conclusion
Conclusion III is Converse of the second Premise.
Conclusion IV is Converse of the first Premise.
First Premise is Universal Affirmative and the second Premise is Universal Negative (E-type).
All students are boys. ? No boy is dull.
A + E ? E?type of Conclusion "No student is dull"
This is conclusion II.
(i) All apples are bananas ? Universal Affirmative (A-type).
(ii) Some apples are sweet ? Particular Affirmative (I-type).
(iii) No apple is banana ? Universal Negative (E-type)
(iv) Some apples are not bananas ? Particular Negative (O-type)
All apples are bananas. ? All bananas are sweet.
A + A ? A ? type of Conclusion "All apples are sweet."
Conclusion I is the Implication of it.
Conclusion II is Converse of the first Premise.
First Premise is Particular Affirmative (I-type).
Second Premise is Universal Affirmative (A-type).
All centuries are decades. ? Some decades are years.
A + I ? No Conclusion
Conclusion II is Converse of the first Premise.
Conclusions I and III form Complementary Pair. Therefore, either I or III follows.
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