Hence proposed Conclusion is right.
[pg068](4)
“All soldiers can march;
Some babies are not soldiers.
Some babies cannot march”.
Univ. “persons”; m = soldiers; x = able to march; y = babies.
“All m are x; Some y are m′. Some y are x′.” | There is no Conclusion. |
(5)
“All selfish men are unpopular;
All obliging men are popular.
All obliging men are unselfish”.
Univ. “men”; m = popular; x = selfish; y = obliging.
“All x are m′; All y are m. All y are x′.” | ∴ “All x are y′; All y are x′.” |
Hence proposed Conclusion is incomplete, the complete one containing, in addition, “All selfish men are disobliging”.