यदि \(a_1=28\) और \(a_{16}=a_1+135\) है तो \(a_{43}\) क्या होगा?
If \(a_1=28\) and \(a_{16}=a_1+135\), what is \(a_{43}\)?
Explanation opens after your attempt
A. (406)
Concept
From (15d=135), (d=9). \(a_{43}=28+42\times9=406\).
Why this answer is correct
The correct answer is A. (406). From (15d=135), (d=9). \(a_{43}=28+42\times9=406\).
Exam Tip
(15d=135) से (d=9)। \(a_{43}=28+42\times9=406\)।
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