यदि किसी समांतर श्रेणी में \(a_3=11\) और (d=5) है, तो पहला पद \(a_1\) क्या होगा?

If an arithmetic progression has \(a_3=11\) and (d=5), what is the first term \(a_1\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (1)

Step 1

Concept

\(a_3=a_1+2d\), so \(11=a_1+10\) and \(a_1=1\). When moving backward subtract the common difference.

Step 2

Why this answer is correct

The correct answer is A. (1). \(a_3=a_1+2d\), so \(11=a_1+10\) and \(a_1=1\). When moving backward subtract the common difference.

Step 3

Exam Tip

\(a_3=a_1+2d\), इसलिए \(11=a_1+10\) और \(a_1=1\)। पीछे जाते समय समान अंतर घटाएं।

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Mathematics Answer, Explanation and Revision Hints

यदि किसी समांतर श्रेणी में \(a_3=11\) और (d=5) है, तो पहला पद \(a_1\) क्या होगा? / If an arithmetic progression has \(a_3=11\) and (d=5), what is the first term \(a_1\)?

Correct Answer: A. (1). Explanation: \(a_3=a_1+2d\), इसलिए \(11=a_1+10\) और \(a_1=1\)। पीछे जाते समय समान अंतर घटाएं। / \(a_3=a_1+2d\), so \(11=a_1+10\) and \(a_1=1\). When moving backward subtract the common difference.

Which concept should I revise for this Mathematics MCQ?

\(a_3=a_1+2d\), so \(11=a_1+10\) and \(a_1=1\). When moving backward subtract the common difference.

What exam hint can help solve this Mathematics question?

\(a_3=a_1+2d\), इसलिए \(11=a_1+10\) और \(a_1=1\)। पीछे जाते समय समान अंतर घटाएं।