यदि \(a_n=a_{n-1}+3n\) और \(a_4=31\) है, तो \(a_2\) का मान क्या होगा?

If \(a_n=a_{n-1}+3n\) and \(a_4=31\), what is the value of \(a_2\)?

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

A. दस(10)

Step 1

Concept

\(a_4=a_2+9+12\), so \(a_2=10\). In exams, think backward for a middle term.

Step 2

Why this answer is correct

The correct answer is A. दस / (10). \(a_4=a_2+9+12\), so \(a_2=10\). In exams, think backward for a middle term.

Step 3

Exam Tip

\(a_4=a_2+9+12\), इसलिए \(a_2=10\) है। परीक्षा में बीच के पद के लिए उल्टी दिशा में सोचें।

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 \(a_n=a_{n-1}+3n\) और \(a_4=31\) है, तो \(a_2\) का मान क्या होगा? / If \(a_n=a_{n-1}+3n\) and \(a_4=31\), what is the value of \(a_2\)?

Correct Answer: A. दस / (10). Explanation: \(a_4=a_2+9+12\), इसलिए \(a_2=10\) है। परीक्षा में बीच के पद के लिए उल्टी दिशा में सोचें। / \(a_4=a_2+9+12\), so \(a_2=10\). In exams, think backward for a middle term.

Which concept should I revise for this Mathematics MCQ?

\(a_4=a_2+9+12\), so \(a_2=10\). In exams, think backward for a middle term.

What exam hint can help solve this Mathematics question?

\(a_4=a_2+9+12\), इसलिए \(a_2=10\) है। परीक्षा में बीच के पद के लिए उल्टी दिशा में सोचें।