5) Some flutes are guitars.
No guitar is a piano.
I + A ⇒ O–type of Conclusion“Some flutes are not pianoes.”No guitar is a piano.
Some pianos are drums.
E + I ⇒
O1 – type of Conclusion“Some drums are not guitars.”
Some pianos are drums.
All drums are violins.
I + A⇒ I–type of Conclusion“Some pianos are violins.”
Venn diagrams of all the premises:
Venn diagrams of “Some flutesare not pianos” :
Venn diagrams of “Some pianosare violins”
After combining Venn diagramsII and V, we get :
Therefore, option (5) may be true.