यदि \(a_1=6\) और (d=9) है, तो \(a_{16}-a_7\) का मान क्या है?
If \(a_1=6\) and (d=9), what is the value of \(a_{16}-a_7\)?
Explanation opens after your attempt
B. (81)
Concept
There are (9) gaps between \(a_{16}\) and \(a_7\), so the difference is \(9\times9=81\). Term differences can be found directly using (d).
Why this answer is correct
The correct answer is B. (81). There are (9) gaps between \(a_{16}\) and \(a_7\), so the difference is \(9\times9=81\). Term differences can be found directly using (d).
Exam Tip
\(a_{16}\) और \(a_7\) के बीच (9) अंतर हैं, इसलिए अंतर \(9\times9=81\) है। पदों का अंतर सीधे (d) से निकाला जा सकता है।
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