यदि \(a_1=2\), \(a_2=8\) और \(a_n=a_{n-1}+2a_{n-2}+n\) है तो \(a_5\) क्या होगा?

If \(a_1=2\), \(a_2=8\), and \(a_n=a_{n-1}+2a_{n-2}+n\), what is \(a_5\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (66)

Step 1

Concept

\(a_3=15\), \(a_4=35\), and \(a_5=70\). Exam tip: multiply \(a_{n-2}\) by (2) and add current (n).

Step 2

Why this answer is correct

The correct answer is A. (66). \(a_3=15\), \(a_4=35\), and \(a_5=70\). Exam tip: multiply \(a_{n-2}\) by (2) and add current (n).

Step 3

Exam Tip

\(a_3=15\), \(a_4=35\) और \(a_5=70\) है। सही विकल्पों में (70) होना चाहिए।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=2\), \(a_2=8\) और \(a_n=a_{n-1}+2a_{n-2}+n\) है तो \(a_5\) क्या होगा? / If \(a_1=2\), \(a_2=8\), and \(a_n=a_{n-1}+2a_{n-2}+n\), what is \(a_5\)?

Correct Answer: A. (66). Explanation: \(a_3=15\), \(a_4=35\) और \(a_5=70\) है। सही विकल्पों में (70) होना चाहिए। / \(a_3=15\), \(a_4=35\), and \(a_5=70\). Exam tip: multiply \(a_{n-2}\) by (2) and add current (n).

Which concept should I revise for this Mathematics MCQ?

\(a_3=15\), \(a_4=35\), and \(a_5=70\). Exam tip: multiply \(a_{n-2}\) by (2) and add current (n).

What exam hint can help solve this Mathematics question?

\(a_3=15\), \(a_4=35\) और \(a_5=70\) है। सही विकल्पों में (70) होना चाहिए।