यदि \(a_1=1\), \(a_2=4\) और \(a_n=a_{n-1}+2a_{n-2}\) है तो \(a_5\) क्या होगा?

If \(a_1=1\), \(a_2=4\), and \(a_n=a_{n-1}+2a_{n-2}\), what is \(a_5\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (26)

Step 1

Concept

The terms are (1,4,6,14,26), so \(a_5=26\). Exam tip: multiply the second previous term by (2).

Step 2

Why this answer is correct

The correct answer is C. (26). The terms are (1,4,6,14,26), so \(a_5=26\). Exam tip: multiply the second previous term by (2).

Step 3

Exam Tip

पद (1,4,6,14,26) हैं इसलिए \(a_5=26\) है। पिछले दो पदों में दूसरे पिछले पद को (2) से गुणा करें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=1\), \(a_2=4\) और \(a_n=a_{n-1}+2a_{n-2}\) है तो \(a_5\) क्या होगा? / If \(a_1=1\), \(a_2=4\), and \(a_n=a_{n-1}+2a_{n-2}\), what is \(a_5\)?

Correct Answer: C. (26). Explanation: पद (1,4,6,14,26) हैं इसलिए \(a_5=26\) है। पिछले दो पदों में दूसरे पिछले पद को (2) से गुणा करें। / The terms are (1,4,6,14,26), so \(a_5=26\). Exam tip: multiply the second previous term by (2).

Which concept should I revise for this Mathematics MCQ?

The terms are (1,4,6,14,26), so \(a_5=26\). Exam tip: multiply the second previous term by (2).

What exam hint can help solve this Mathematics question?

पद (1,4,6,14,26) हैं इसलिए \(a_5=26\) है। पिछले दो पदों में दूसरे पिछले पद को (2) से गुणा करें।