यदि \(a_1=4\) और (a_{n+1}=a_n+n(n+1)+2) है तो \(a_4\) क्या होगा?

If \(a_1=4\) and (a_{n+1}=a_n+n(n+1)+2), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (30)

Step 1

Concept

The added values are (4,8,14), so \(a_4=30\). Exam tip: calculate the product and then add (2).

Step 2

Why this answer is correct

The correct answer is B. (30). The added values are (4,8,14), so \(a_4=30\). Exam tip: calculate the product and then add (2).

Step 3

Exam Tip

जुड़ने वाले मान (4,8,14) हैं इसलिए \(a_4=30\) है। गुणनफल निकालकर (2) जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=4\) और (a_{n+1}=a_n+n(n+1)+2) है तो \(a_4\) क्या होगा? / If \(a_1=4\) and (a_{n+1}=a_n+n(n+1)+2), what is \(a_4\)?

Correct Answer: B. (30). Explanation: जुड़ने वाले मान (4,8,14) हैं इसलिए \(a_4=30\) है। गुणनफल निकालकर (2) जोड़ें। / The added values are (4,8,14), so \(a_4=30\). Exam tip: calculate the product and then add (2).

Which concept should I revise for this Mathematics MCQ?

The added values are (4,8,14), so \(a_4=30\). Exam tip: calculate the product and then add (2).

What exam hint can help solve this Mathematics question?

जुड़ने वाले मान (4,8,14) हैं इसलिए \(a_4=30\) है। गुणनफल निकालकर (2) जोड़ें।