यदि \(a_1=80\) और \(a_{n+1}=\frac{a_n}{2}-n\) है तो \(a_3\) क्या होगा?
If \(a_1=80\) and \(a_{n+1}=\frac{a_n}{2}-n\), what is \(a_3\)?
Explanation opens after your attempt
A. (17)
Concept
\(a_2=40-1=39\) and \(a_3=\frac{39}{2}-2=17.5\). So none of the options is correct.
Why this answer is correct
The correct answer is A. (17). \(a_2=40-1=39\) and \(a_3=\frac{39}{2}-2=17.5\). So none of the options is correct.
Exam Tip
\(a_2=40-1=39\) और \(a_3=\frac{39}{2}-2=17.5\) है। इसलिए दिए गए विकल्पों में सही मान नहीं है।
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