The sum of the first terms of an AP is . If the term of the AP is , then what is the value of ? एक AP के प्रथम n पदों का योगफल 3n² + 5n है। यदि इस AP का m वां पद 68 है , तो m का मान क्या है ?

11 Explanation: To find the term ( ) of an arithmetic progression when the sum of the first terms ( ) is given, we use the following relationship: Define the Sum Function: Given . Find the formula for the term ( ): Now, calculate : Solve for : We are given that the term is . Substitute into the formula for : Correct Option: (c) 11

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NDA 2026 — Mathematics PYQ

NDA | Mathematics | 2026

The sum of the first $n$ terms of an AP is $3 n^{2} + 5 n$ . If the $m^{t h}$ term of the AP is $68$ , then what is the value of $m$ ?

एक AP के प्रथम n पदों का योगफल 3n² + 5n है। यदि इस AP का mवां पद 68 है, तो m का मान क्या है ?

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