Question

In the following question, two statements are given followed by two conclusions. You have to consider the two 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 and assumptions if any, follow from the given statement.

Statements
All hens are cocks.
No cock is blue.

Conclusions
I.All cocks are hens.
II. No hen is blue.

• A. Only conclusion I is valid
• B. Only conclusion II is valid
• C. Both the conclusions are valid
• D. Both the conclusions are invalid
• E. None of the above

Answer 1

The correct option is B Only conclusion II is valid

All hens are cocks.(A)
No cock is blue.(E)
$A+E\Rightarrow E$ -type of conclusion
No hen is blue.
This is conclusion II.