यदि समांतर श्रेणी में \(a_3+a_9=72\) है, तो \(a_6\) क्या होगा?
If in an arithmetic progression \(a_3+a_9=72\), what is \(a_6\)?
Explanation opens after your attempt
C. (36)
Concept
\(a_6\) is equidistant from \(a_3\) and \(a_9\), so \(a_6=\frac{72}{2}=36\). The average of symmetric terms is the middle term.
Why this answer is correct
The correct answer is C. (36). \(a_6\) is equidistant from \(a_3\) and \(a_9\), so \(a_6=\frac{72}{2}=36\). The average of symmetric terms is the middle term.
Exam Tip
\(a_3\) और \(a_9\) से \(a_6\) समान दूरी पर है, इसलिए \(a_6=\frac{72}{2}=36\)। सममित पदों का औसत मध्य पद होता है।
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