अनुक्रम \(3,12,21,30,\ldots\) में (111) कौन-सा पद है?
In the sequence \(3,12,21,30,\ldots\) which term is (111)?
Explanation opens after your attempt
B. तेरहवाँ पद(13)th term
Concept
Its rule is \(a_n=9n-6\) and (9n-6=111) gives (n=13). In exams equate the given term to the general term.
Why this answer is correct
The correct answer is B. तेरहवाँ पद / (13)th term. Its rule is \(a_n=9n-6\) and (9n-6=111) gives (n=13). In exams equate the given term to the general term.
Exam Tip
इसका नियम \(a_n=9n-6\) है और (9n-6=111) से (n=13) है। परीक्षा में दिए पद को सामान्य पद के बराबर रखें।
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