वैध निष्कर्ष निवडा.
सत्य विधाने :
काही पेन्सिली बंदुका आहेत.
काही बंदुका पेने आहेत.
काही पेने मारेकरी आहेत.
निष्कर्ष :
(a) काही पेन्सिली पेने आहेत.
(b) काही बंदुका मारेकरी आहेत.
(c) काही मारेकरी पेने आहेत.
(d) काही मारेकरी बंदुका आहेत.

The correct answer is Option D (Only (c)).

Key Points:
• In standard syllogism evaluation:
• Statement 1: Some pencils are guns (I-type).
• Statement 2: Some guns are pens (I-type).
• Statement 3: Some pens are killers (I-type).
• Since all premises are Particular Affirmative (I) propositions, no definite conclusion can be derived across terms that do not share direct immediate conversion.
• Conclusion (a): 'Some pencils are pens' – There is no direct necessary overlap established between pencils and pens; hence invalid.
• Conclusion (b): 'Some guns are killers' – No definite relation exists between guns and killers; hence invalid.
• Conclusion (c): 'Some killers are pens' – This is the direct valid conversion of the third premise 'Some pens are killers' (Conversion of I gives I); hence valid.
• Conclusion (d): 'Some killers are guns' – No definite relationship exists; hence invalid.
• Therefore, only conclusion (c) logically follows.
• Key Takeaway: Conversion of an 'I' proposition (Some A are B) directly yields 'Some B are A'.