यदि \(a_1=3\) और \(a_{n+1}=2a_n+1\) है तो \(a_3\) क्या होगा?
If \(a_1=3\) and \(a_{n+1}=2a_n+1\), what is \(a_3\)?
Explanation opens after your attempt
C. (15)
Concept
The terms are (3,7,15), so \(a_3=15\). Exam tip: double first and then add (1).
Why this answer is correct
The correct answer is C. (15). The terms are (3,7,15), so \(a_3=15\). Exam tip: double first and then add (1).
Exam Tip
पद (3,7,15) हैं इसलिए \(a_3=15\) है। पहले दोगुना करें फिर (1) जोड़ें।
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