समांतर श्रेणी में \(a_7=50\) और (d=9) है। \(a_1\) क्या होगा?

In an arithmetic progression, \(a_7=50\) and (d=9). What is \(a_1\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (-4)

Step 1

Concept

\(a_7=a_1+6d\), so \(50=a_1+54\) and \(a_1=-4\). To move backward from a given term, subtract common differences.

Step 2

Why this answer is correct

The correct answer is A. (-4). \(a_7=a_1+6d\), so \(50=a_1+54\) and \(a_1=-4\). To move backward from a given term, subtract common differences.

Step 3

Exam Tip

\(a_7=a_1+6d\), इसलिए \(50=a_1+54\) और \(a_1=-4\)। दिए पद से पीछे जाने के लिए समान अंतर घटाएं।

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Mathematics Answer, Explanation and Revision Hints

समांतर श्रेणी में \(a_7=50\) और (d=9) है। \(a_1\) क्या होगा? / In an arithmetic progression, \(a_7=50\) and (d=9). What is \(a_1\)?

Correct Answer: A. (-4). Explanation: \(a_7=a_1+6d\), इसलिए \(50=a_1+54\) और \(a_1=-4\)। दिए पद से पीछे जाने के लिए समान अंतर घटाएं। / \(a_7=a_1+6d\), so \(50=a_1+54\) and \(a_1=-4\). To move backward from a given term, subtract common differences.

Which concept should I revise for this Mathematics MCQ?

\(a_7=a_1+6d\), so \(50=a_1+54\) and \(a_1=-4\). To move backward from a given term, subtract common differences.

What exam hint can help solve this Mathematics question?

\(a_7=a_1+6d\), इसलिए \(50=a_1+54\) और \(a_1=-4\)। दिए पद से पीछे जाने के लिए समान अंतर घटाएं।