यदि \(a_1=100\) और (a_{n+1}=a_n-n(n+2)) है तो \(a_4\) क्या होगा?

If \(a_1=100\) and (a_{n+1}=a_n-n(n+2)), what is \(a_4\)?

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

A. (74)

Step 1

Concept

The terms are (100,97,89,74), so \(a_4=74\). Exam tip: subtract (3,8,15) in order.

Step 2

Why this answer is correct

The correct answer is A. (74). The terms are (100,97,89,74), so \(a_4=74\). Exam tip: subtract (3,8,15) in order.

Step 3

Exam Tip

पद (100,97,89,74) हैं इसलिए \(a_4=74\) है। (3,8,15) को क्रम से घटाएँ।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=100\) और (a_{n+1}=a_n-n(n+2)) है तो \(a_4\) क्या होगा? / If \(a_1=100\) and (a_{n+1}=a_n-n(n+2)), what is \(a_4\)?

Correct Answer: A. (74). Explanation: पद (100,97,89,74) हैं इसलिए \(a_4=74\) है। (3,8,15) को क्रम से घटाएँ। / The terms are (100,97,89,74), so \(a_4=74\). Exam tip: subtract (3,8,15) in order.

Which concept should I revise for this Mathematics MCQ?

The terms are (100,97,89,74), so \(a_4=74\). Exam tip: subtract (3,8,15) in order.

What exam hint can help solve this Mathematics question?

पद (100,97,89,74) हैं इसलिए \(a_4=74\) है। (3,8,15) को क्रम से घटाएँ।