अनुक्रम \(3,8,19,46,\ldots\) के लिए कौन सा पुनरावर्ती नियम सही है?

Which recursive rule is correct for the sequence \(3,8,19,46,\ldots\)?

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Correct Answer

D. \(a_1=3, a_2=8, a_n=2a_{n-1}+a_{n-2}\)

Step 1

Concept

\(2\times8+3=19\) and \(2\times19+8=46\). Exam tip: both starting terms must be correct in a two-term rule.

Step 2

Why this answer is correct

The correct answer is D. \(a_1=3, a_2=8, a_n=2a_{n-1}+a_{n-2}\). \(2\times8+3=19\) and \(2\times19+8=46\). Exam tip: both starting terms must be correct in a two-term rule.

Step 3

Exam Tip

\(2\times8+3=19\) और \(2\times19+8=46\) है। दो-पद नियम में दोनों शुरुआती पद सही होने चाहिए।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(3,8,19,46,\ldots\) के लिए कौन सा पुनरावर्ती नियम सही है? / Which recursive rule is correct for the sequence \(3,8,19,46,\ldots\)?

Correct Answer: D. \(a_1=3, a_2=8, a_n=2a_{n-1}+a_{n-2}\). Explanation: \(2\times8+3=19\) और \(2\times19+8=46\) है। दो-पद नियम में दोनों शुरुआती पद सही होने चाहिए। / \(2\times8+3=19\) and \(2\times19+8=46\). Exam tip: both starting terms must be correct in a two-term rule.

Which concept should I revise for this Mathematics MCQ?

\(2\times8+3=19\) and \(2\times19+8=46\). Exam tip: both starting terms must be correct in a two-term rule.

What exam hint can help solve this Mathematics question?

\(2\times8+3=19\) और \(2\times19+8=46\) है। दो-पद नियम में दोनों शुरुआती पद सही होने चाहिए।