यदि \(a_1=8\) और \(a_{n+1}=\frac{a_n}{2}+a_1\) है तो \(a_4\) क्या होगा?
If \(a_1=8\) and \(a_{n+1}=\frac{a_n}{2}+a_1\), what is \(a_4\)?
Explanation opens after your attempt
C. (15)
Concept
The terms are (8,12,14,15), so \(a_4=15\). Exam tip: \(a_1\) stays fixed and half of the previous term is used.
Why this answer is correct
The correct answer is C. (15). The terms are (8,12,14,15), so \(a_4=15\). Exam tip: \(a_1\) stays fixed and half of the previous term is used.
Exam Tip
पद (8,12,14,15) हैं इसलिए \(a_4=15\) है। \(a_1\) स्थिर रहता है और पिछले पद का आधा लिया जाता है।
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