यदि (a_n=n(n+4)) है तो कौन सा पद (165) है?
If (a_n=n(n+4)), which term is (165)?
Explanation opens after your attempt
C. (11)वाँ(11)th
Concept
(11(11+4)=165), so it is the (11)th term. Exam tip: substitute options directly in product-form formulas.
Why this answer is correct
The correct answer is C. (11)वाँ / (11)th. (11(11+4)=165), so it is the (11)th term. Exam tip: substitute options directly in product-form formulas.
Exam Tip
(11(11+4)=165) इसलिए यह (11)वाँ पद है। गुणनफल वाले सूत्र में विकल्प सीधे रखें।
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