समांतर श्रेणी \(11,20,29,38,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the arithmetic progression \(11,20,29,38,\ldots\)?
Explanation opens after your attempt
A. \(a_n=9n+2\)
Concept
The first term is (11) and (d=9), so (a_n=11+(n-1)9=9n+2). You can check an option by putting (n=1).
Why this answer is correct
The correct answer is A. \(a_n=9n+2\). The first term is (11) and (d=9), so (a_n=11+(n-1)9=9n+2). You can check an option by putting (n=1).
Exam Tip
पहला पद (11) और (d=9) है, इसलिए (a_n=11+(n-1)9=9n+2)। विकल्प को (n=1) रखकर जांच सकते हैं।
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