अनुक्रम \(47,43,39,35,\ldots\) का सामान्य पद क्या है?
What is the general term of the sequence \(47,43,39,35,\ldots\)?
Explanation opens after your attempt
C. \(a_n=51-4n\)
Concept
At (n=1) it gives (47) and at (n=2) it gives (43) so \(a_n=51-4n\). In exams match the first term in a decreasing sequence.
Why this answer is correct
The correct answer is C. \(a_n=51-4n\). At (n=1) it gives (47) and at (n=2) it gives (43) so \(a_n=51-4n\). In exams match the first term in a decreasing sequence.
Exam Tip
(n=1) पर (47) और (n=2) पर (43) मिलता है इसलिए \(a_n=51-4n\) है। परीक्षा में घटते अनुक्रम में पहला पद मिलाएँ।
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