यदि \(a_n=3n^2+2n-1\) है तो कौन-सा कथन सही है?
If \(a_n=3n^2+2n-1\) then which statement is correct?
Explanation opens after your attempt
A. \(a_2=15\) और \(a_3=32\)\(a_2=15\) and \(a_3=32\)
Concept
\(a_2=12+4-1=15\) and \(a_3=27+6-1=32\). In exams use a new value of (n) for each term.
Why this answer is correct
The correct answer is A. \(a_2=15\) और \(a_3=32\) / \(a_2=15\) and \(a_3=32\). \(a_2=12+4-1=15\) and \(a_3=27+6-1=32\). In exams use a new value of (n) for each term.
Exam Tip
\(a_2=12+4-1=15\) और \(a_3=27+6-1=32\) है। परीक्षा में हर पद के लिए (n) का नया मान रखें।
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