Question

In each of the following questions, statements are given followed by conclusions. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions if any, follow the given statements.

Statements
All students are boys.
No boy is dull.

Conclusions:
I. There are no girls in the class.
II. No student is dull.

• A. Only conclusion I follows
• B. Only conclusion II follows
• C. Both conclusions I and II follow
• D. Neither conclusion I nor conclusion II follows
• E. Conclusion I follows and conclusion II may follow

Answer 1

The correct option is B Only conclusion II follows

The first premise is a universal affirmative and the second premise is a universal negative (E-type).
All students are boys.
No boy is dull.
$A+E\Rightarrow E$-type of conclusion
No student is dull
This is conclusion II.