अनुक्रम \(14,18,22,26,\ldots\) में \(a_n=70\) के लिए (n) क्या है?
In the sequence \(14,18,22,26,\ldots\), what is (n) for \(a_n=70\)?
Explanation opens after your attempt
C. (15)
Concept
(a_n=14+(n-1)4=4n+10), so (4n+10=70) gives (n=15). Set the rule equal to the given term.
Why this answer is correct
The correct answer is C. (15). (a_n=14+(n-1)4=4n+10), so (4n+10=70) gives (n=15). Set the rule equal to the given term.
Exam Tip
(a_n=14+(n-1)4=4n+10), इसलिए (4n+10=70) से (n=15)। नियम को दिए पद के बराबर रखें।
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