Some new are
old All
old are ancient
I + A ⇒ I - type of Conclusion
“Some new are ancient".
Its Converse is :
“Some ancient are new".
Therefore, Conclusion (4) does not follow.
All old are
ancient No
ancient is a fossil.
A + E ⇒ E - type of Conclusion
“No old is a fossil”.
Conclusion (1) is the Converse of it.
All modern are
fossils No
fossil is an ancient.
A + E ⇒ E - type of Conclusion
“No modem is an ancient".
Conclusion (2) is the Converse of it.
All modern are
fossils No
fossil is old.
A + E ⇒ E - type of Conclusion
"No modem Is old".
This is Conclusion (3).
Some new are
ancient No
ancient is a fossil.
I + E ⇒ O - type of Conclusion
“Some new arc not fossils".
Its venn diagrams
It is clear form the diagram II that “All fossils being new is a possibility".
Therefore, Conclusion (5) also follows.