Question

Two statements are given followed by four conclusions I, II, III and IV. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You are to decide which of the given conclusions if any, follow from the given statements.

Statements
All pens are pencils.
No pencil is a monkey.

Conclusions
I. No pen is a monkey.
II. Some pens are monkeys.
III. All monkeys are pens.
IV. Some monkeys are pens.

• A. Either conclusion II or III follows
• B. Either conclusion II or IV follows
• C. Only conclusion I follows
• D. All conclusions follow
• E. None of the above

Answer 1

The correct option is C Only conclusion I follows

The first premise is universal affirmative (A-type).
The second premise is Universal Negative (E-type).
All pens are pencils.
No pencil is a monkey.
\(A+E=E-type of conclusion
"No pen is a monkey".
This is conclusion I.