यदि \(a_1=25\) और (a_{n+1}=a_n-(2n+1)) है तो \(a_3\) क्या होगा?
If \(a_1=25\) and (a_{n+1}=a_n-(2n+1)), what is \(a_3\)?
Explanation opens after your attempt
B. (17)
Concept
The terms are (25,22,17), so \(a_3=17\). Exam tip: calculate (2n+1) correctly at each step.
Why this answer is correct
The correct answer is B. (17). The terms are (25,22,17), so \(a_3=17\). Exam tip: calculate (2n+1) correctly at each step.
Exam Tip
पद (25,22,17) हैं इसलिए \(a_3=17\) है। (2n+1) को हर चरण में सही निकालें।
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