यदि \(a_n=n^3-n\) है तो \(a_7-a_5\) का मान क्या होगा?
If \(a_n=n^3-n\), what will be the value of \(a_7-a_5\)?
Explanation opens after your attempt
B. (216)
Concept
\(a_7=336\) and \(a_5=120\), so the difference is (216). Exam tip: calculate cube-based terms separately first.
Why this answer is correct
The correct answer is B. (216). \(a_7=336\) and \(a_5=120\), so the difference is (216). Exam tip: calculate cube-based terms separately first.
Exam Tip
\(a_7=336\) और \(a_5=120\) इसलिए अंतर (216) है। घन वाले पदों में पहले मान अलग निकालें।
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