यदि \(a_1=50\) और (a_{n+1}=a_n-(-1)^n\(n^2+1\)) है तो \(a_4\) क्या होगा?

If \(a_1=50\) and (a_{n+1}=a_n-(-1)^n\(n^2+1\)), what is \(a_4\)?

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

B. (57)

Step 1

Concept

The terms are (50,52,47,57), so \(a_4=57\). Exam tip: track the outside minus sign with ((-1)^n).

Step 2

Why this answer is correct

The correct answer is B. (57). The terms are (50,52,47,57), so \(a_4=57\). Exam tip: track the outside minus sign with ((-1)^n).

Step 3

Exam Tip

पद (50,52,47,57) हैं इसलिए \(a_4=57\) है। बाहरी ऋण और ((-1)^n) को साथ में देखें।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=50\) और (a_{n+1}=a_n-(-1)^n\(n^2+1\)) है तो \(a_4\) क्या होगा? / If \(a_1=50\) and (a_{n+1}=a_n-(-1)^n\(n^2+1\)), what is \(a_4\)?

Correct Answer: B. (57). Explanation: पद (50,52,47,57) हैं इसलिए \(a_4=57\) है। बाहरी ऋण और ((-1)^n) को साथ में देखें। / The terms are (50,52,47,57), so \(a_4=57\). Exam tip: track the outside minus sign with ((-1)^n).

Which concept should I revise for this Mathematics MCQ?

The terms are (50,52,47,57), so \(a_4=57\). Exam tip: track the outside minus sign with ((-1)^n).

What exam hint can help solve this Mathematics question?

पद (50,52,47,57) हैं इसलिए \(a_4=57\) है। बाहरी ऋण और ((-1)^n) को साथ में देखें।