Statements:Some whys are where’s.
All when’s are whys.
All where’s are who’s.
Conclusions:I. Some who’s are whys.
II. All where’s are when’s.
III. Some where’s are not when’s.
Some whys are where (I) + All where are who’s (A) = Some whys are who’s.(I) ⇒ conversion ⇒ Some who’s are whys.(I) Hence, conclusion I will follow. A + I = No conclusion. Hence, neither conclusion II nor III follows. However, Conclusion II and III make a complementary pair, hence, either conclusion II or III follows. Alternative method: