अनुक्रम \(3,6,12,24,\ldots\) का सामान्य पद क्या है?
What is the general term of the sequence \(3,6,12,24,\ldots\)?
Explanation opens after your attempt
Correct Answer
D. \(a_n=3\cdot2^{n-1}\)
Concept
The first term is (3) and each term is multiplied by (2) so \(a_n=3\cdot2^{n-1}\). In exams check both the first term and ratio.
Why this answer is correct
The correct answer is D. \(a_n=3\cdot2^{n-1}\). The first term is (3) and each term is multiplied by (2) so \(a_n=3\cdot2^{n-1}\). In exams check both the first term and ratio.
Exam Tip
पहला पद (3) है और हर बार (2) से गुणा हो रहा है इसलिए \(a_n=3\cdot2^{n-1}\) है। परीक्षा में पहले पद और अनुपात दोनों देखें।
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