समांतर श्रेणी में \(a_4=19\) और \(a_{13}=73\) है। समान अंतर (d) क्या है?

In an arithmetic progression, \(a_4=19\) and \(a_{13}=73\). What is the common difference (d)?

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Correct Answer

C. (6)

Step 1

Concept

\(a_{13}-a_4=9d=54\), so (d=6). Count the difference of term positions carefully.

Step 2

Why this answer is correct

The correct answer is C. (6). \(a_{13}-a_4=9d=54\), so (d=6). Count the difference of term positions carefully.

Step 3

Exam Tip

\(a_{13}-a_4=9d=54\), इसलिए (d=6)। दो पदों के बीच पद-संख्या का अंतर ध्यान से गिनें।

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Mathematics Answer, Explanation and Revision Hints

समांतर श्रेणी में \(a_4=19\) और \(a_{13}=73\) है। समान अंतर (d) क्या है? / In an arithmetic progression, \(a_4=19\) and \(a_{13}=73\). What is the common difference (d)?

Correct Answer: C. (6). Explanation: \(a_{13}-a_4=9d=54\), इसलिए (d=6)। दो पदों के बीच पद-संख्या का अंतर ध्यान से गिनें। / \(a_{13}-a_4=9d=54\), so (d=6). Count the difference of term positions carefully.

Which concept should I revise for this Mathematics MCQ?

\(a_{13}-a_4=9d=54\), so (d=6). Count the difference of term positions carefully.

What exam hint can help solve this Mathematics question?

\(a_{13}-a_4=9d=54\), इसलिए (d=6)। दो पदों के बीच पद-संख्या का अंतर ध्यान से गिनें।