Three statements are given, followed by four conclusions numbered I, II, III, IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
Some drums are violins
Some violins are pianos
All the pianos are flutes.
Conclusions:
I. Some flutes are violins.
II. Some pianos are drums.
III. No piano is drum.
IV. Some violins are drums.
1
Both conclusions I and IV and either II or III follows
2
Both conclusions II and III follow
3
Both conclusions II and IV follow
4
Both conclusions I and II follow