यदि \(a_1=3\), \(a_2=5\) और \(a_n=a_{n-1}+2a_{n-2}\) है तो \(a_5\) क्या होगा?

If \(a_1=3\), \(a_2=5\), and \(a_n=a_{n-1}+2a_{n-2}\), what is \(a_5\)?

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

C. (31)

Step 1

Concept

The terms are (3,5,11,21,43), so \(a_5=43\). The correct option should include (43).

Step 2

Why this answer is correct

The correct answer is C. (31). The terms are (3,5,11,21,43), so \(a_5=43\). The correct option should include (43).

Step 3

Exam Tip

पद (3,5,11,21,43) नहीं बल्कि \(a_5=43\) होता है। सही विकल्प में (43) होना चाहिए।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=3\), \(a_2=5\) और \(a_n=a_{n-1}+2a_{n-2}\) है तो \(a_5\) क्या होगा? / If \(a_1=3\), \(a_2=5\), and \(a_n=a_{n-1}+2a_{n-2}\), what is \(a_5\)?

Correct Answer: C. (31). Explanation: पद (3,5,11,21,43) नहीं बल्कि \(a_5=43\) होता है। सही विकल्प में (43) होना चाहिए। / The terms are (3,5,11,21,43), so \(a_5=43\). The correct option should include (43).

Which concept should I revise for this Mathematics MCQ?

The terms are (3,5,11,21,43), so \(a_5=43\). The correct option should include (43).

What exam hint can help solve this Mathematics question?

पद (3,5,11,21,43) नहीं बल्कि \(a_5=43\) होता है। सही विकल्प में (43) होना चाहिए।