यदि \(a_n=pn+q\), \(a_5=31\) और \(a_{12}=80\) है तो \(a_1\) क्या होगा?

If \(a_n=pn+q\), \(a_5=31\) and \(a_{12}=80\), what will \(a_1\) be?

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

C. (3)

Step 1

Concept

\(p=\frac{80-31}{12-5}=7\) and (q=-4). Therefore \(a_1=7-4=3\).

Step 2

Why this answer is correct

The correct answer is C. (3). \(p=\frac{80-31}{12-5}=7\) and (q=-4). Therefore \(a_1=7-4=3\).

Step 3

Exam Tip

\(p=\frac{80-31}{12-5}=7\) और (q=-4) है। इसलिए \(a_1=7-4=3\) है।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=pn+q\), \(a_5=31\) और \(a_{12}=80\) है तो \(a_1\) क्या होगा? / If \(a_n=pn+q\), \(a_5=31\) and \(a_{12}=80\), what will \(a_1\) be?

Correct Answer: C. (3). Explanation: \(p=\frac{80-31}{12-5}=7\) और (q=-4) है। इसलिए \(a_1=7-4=3\) है। / \(p=\frac{80-31}{12-5}=7\) and (q=-4). Therefore \(a_1=7-4=3\).

Which concept should I revise for this Mathematics MCQ?

\(p=\frac{80-31}{12-5}=7\) and (q=-4). Therefore \(a_1=7-4=3\).

What exam hint can help solve this Mathematics question?

\(p=\frac{80-31}{12-5}=7\) और (q=-4) है। इसलिए \(a_1=7-4=3\) है।