अनुक्रम \(2,12,58,248,\ldots\) के लिए सही स्पष्ट नियम कौन-सा है?
Which explicit rule is correct for the sequence \(2,12,58,248,\ldots\)?
Explanation opens after your attempt
A. \(a_n=4^n-2n\)
Concept
\(4^n-2n\) gives (2,12,58,248). In exams also check subtraction of a linear term from a power.
Why this answer is correct
The correct answer is A. \(a_n=4^n-2n\). \(4^n-2n\) gives (2,12,58,248). In exams also check subtraction of a linear term from a power.
Exam Tip
\(4^n-2n\) से (2,12,58,248) मिलते हैं। परीक्षा में घात में से रैखिक पद घटाकर भी जाँचें।
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