यदि \(a_1=100\) और (a_{n+1}=a_n-\(2n^2+n\)) है तो \(a_3\) क्या होगा?

If \(a_1=100\) and (a_{n+1}=a_n-\(2n^2+n\)), what is \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (87)

Step 1

Concept

The terms are (100,97,87), so \(a_3=87\). Exam tip: calculate the new value of \(2n^2+n\) at each step.

Step 2

Why this answer is correct

The correct answer is A. (87). The terms are (100,97,87), so \(a_3=87\). Exam tip: calculate the new value of \(2n^2+n\) at each step.

Step 3

Exam Tip

पद (100,97,87) हैं इसलिए \(a_3=87\) है। \(2n^2+n\) का मान हर चरण में नया निकालें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=100\) और (a_{n+1}=a_n-\(2n^2+n\)) है तो \(a_3\) क्या होगा? / If \(a_1=100\) and (a_{n+1}=a_n-\(2n^2+n\)), what is \(a_3\)?

Correct Answer: A. (87). Explanation: पद (100,97,87) हैं इसलिए \(a_3=87\) है। \(2n^2+n\) का मान हर चरण में नया निकालें। / The terms are (100,97,87), so \(a_3=87\). Exam tip: calculate the new value of \(2n^2+n\) at each step.

Which concept should I revise for this Mathematics MCQ?

The terms are (100,97,87), so \(a_3=87\). Exam tip: calculate the new value of \(2n^2+n\) at each step.

What exam hint can help solve this Mathematics question?

पद (100,97,87) हैं इसलिए \(a_3=87\) है। \(2n^2+n\) का मान हर चरण में नया निकालें।