Q111
Statements : Some tapes are discs. Some discs are cassettes. Some cassettes are songs. Conclusions : I. Some songs are discs. II. Some cassettes are tapes. III. Some songs are tapes. IV. No song is a disc.
A.
Only either I or IV follows
AnswerB.
Only either II or IV follows
C.
Only III and IV follow
D.
Only III and either II or IV follows
E.
None of these
Answer: Option A
Solution
Answer: Option A
Solution:
Since each combination of premises shall contain two particular premises, no definite conclusion can be drawn. However, I and IV involve the extreme terms of the second and third premises and form a complementary pair. Thus, either I or IV follows.