यदि \(a_1=5\), \(a_2=8\) और \(a_n=2a_{n-1}-a_{n-2}\) है तो \(a_7\) क्या होगा?
If \(a_1=5\), \(a_2=8\), and \(a_n=2a_{n-1}-a_{n-2}\), what is \(a_7\)?
Explanation opens after your attempt
D. (23)
Concept
The terms are (5,8,11,14,17,20,23), so \(a_7=23\). Exam tip: this rule keeps the difference constant.
Why this answer is correct
The correct answer is D. (23). The terms are (5,8,11,14,17,20,23), so \(a_7=23\). Exam tip: this rule keeps the difference constant.
Exam Tip
पद (5,8,11,14,17,20,23) हैं इसलिए \(a_7=23\) है। यह नियम समान अंतर को बनाए रखता है।
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