अनुक्रम \(11,15,19,23,\ldots\) में \(a_n=63\) के लिए (n) क्या है?
In the sequence \(11,15,19,23,\ldots\), what is (n) for \(a_n=63\)?
Explanation opens after your attempt
C. (14)
Concept
(a_n=11+(n-1)4=4n+7), so (4n+7=63) gives (n=14). Set the rule equal to the given term.
Why this answer is correct
The correct answer is C. (14). (a_n=11+(n-1)4=4n+7), so (4n+7=63) gives (n=14). Set the rule equal to the given term.
Exam Tip
(a_n=11+(n-1)4=4n+7), इसलिए (4n+7=63) से (n=14)। नियम को दिए पद के बराबर रखें।
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