Statements: All scientists are fools. All fools are illiterate. Conclusion: I. All scientists are illiterate II. All illiterate are scientists. III. All illiterates are fools. IV. Some illiterates would be scientiste.
Answer: Option [A]
The area for scientists lies entirely in the area for illiterates. So, conclusion i follows. The area I does not lie completely within S or entirely within F. So, conclusions ii and iii cannot follow. Since illiterates and scientists have a common area, conclusion iv follows. Thus, only conclusion i and iv follow.