यदि \(a_1=5\) और \(a_{n+1}=a_n+3n\) है तो \(a_4\) क्या होगा?

If \(a_1=5\) and \(a_{n+1}=a_n+3n\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (23)

Step 1

Concept

The terms are (5,8,14,23), so \(a_4=23\). Exam tip: find (3n) first and then add.

Step 2

Why this answer is correct

The correct answer is D. (23). The terms are (5,8,14,23), so \(a_4=23\). Exam tip: find (3n) first and then add.

Step 3

Exam Tip

पद (5,8,14,23) हैं इसलिए \(a_4=23\) है। पहले (3n) निकालें फिर जोड़ें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=5\) और \(a_{n+1}=a_n+3n\) है तो \(a_4\) क्या होगा? / If \(a_1=5\) and \(a_{n+1}=a_n+3n\), what is \(a_4\)?

Correct Answer: D. (23). Explanation: पद (5,8,14,23) हैं इसलिए \(a_4=23\) है। पहले (3n) निकालें फिर जोड़ें। / The terms are (5,8,14,23), so \(a_4=23\). Exam tip: find (3n) first and then add.

Which concept should I revise for this Mathematics MCQ?

The terms are (5,8,14,23), so \(a_4=23\). Exam tip: find (3n) first and then add.

What exam hint can help solve this Mathematics question?

पद (5,8,14,23) हैं इसलिए \(a_4=23\) है। पहले (3n) निकालें फिर जोड़ें।