यदि किसी समानांतर श्रेढ़ी में \(a_2=13\) और (d=4) है, तो \(a_1\) क्या होगा?

If an arithmetic progression has \(a_2=13\) and (d=4), what is \(a_1\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (9)

Step 1

Concept

\(a_2=a_1+d\), so \(a_1=13-4=9\). If the second term is given, move one common difference backward.

Step 2

Why this answer is correct

The correct answer is D. (9). \(a_2=a_1+d\), so \(a_1=13-4=9\). If the second term is given, move one common difference backward.

Step 3

Exam Tip

\(a_2=a_1+d\), इसलिए \(a_1=13-4=9\)। दूसरा पद दिया हो तो एक समान अंतर पीछे जाएं।

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यदि किसी समानांतर श्रेढ़ी में \(a_2=13\) और (d=4) है, तो \(a_1\) क्या होगा? / If an arithmetic progression has \(a_2=13\) and (d=4), what is \(a_1\)?

Correct Answer: D. (9). Explanation: \(a_2=a_1+d\), इसलिए \(a_1=13-4=9\)। दूसरा पद दिया हो तो एक समान अंतर पीछे जाएं। / \(a_2=a_1+d\), so \(a_1=13-4=9\). If the second term is given, move one common difference backward.

Which concept should I revise for this Mathematics MCQ?

\(a_2=a_1+d\), so \(a_1=13-4=9\). If the second term is given, move one common difference backward.

What exam hint can help solve this Mathematics question?

\(a_2=a_1+d\), इसलिए \(a_1=13-4=9\)। दूसरा पद दिया हो तो एक समान अंतर पीछे जाएं।