यदि \(a_1=9\) और \(a_{n+1}=a_n+2\) है तो \(a_4\) क्या होगा?
If \(a_1=9\) and \(a_{n+1}=a_n+2\), what is \(a_4\)?
Explanation opens after your attempt
B. (15)
Concept
The terms are (9,11,13,15), so \(a_4=15\). Exam tip: add (2) at each step.
Why this answer is correct
The correct answer is B. (15). The terms are (9,11,13,15), so \(a_4=15\). Exam tip: add (2) at each step.
Exam Tip
पद (9,11,13,15) हैं इसलिए \(a_4=15\) है। हर चरण में (2) जोड़ें।
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