समांतर श्रेणी \(12,15,18,21,\ldots\) का \(a_6\) क्या है?
What is \(a_6\) of the arithmetic progression \(12,15,18,21,\ldots\)?
Explanation opens after your attempt
B. (27)
Concept
(a=12) and (d=3), so \(a_6=12+5\times3=27\). In exams, keep (n-1) correct.
Why this answer is correct
The correct answer is B. (27). (a=12) and (d=3), so \(a_6=12+5\times3=27\). In exams, keep (n-1) correct.
Exam Tip
(a=12) और (d=3), इसलिए \(a_6=12+5\times3=27\) है। परीक्षा में (n-1) को सही रखें।
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