समांतर श्रेणी में \(a_5=18\) और \(a_{12}=46\) है। समान अंतर (d) क्या है?

In an arithmetic progression, \(a_5=18\) and \(a_{12}=46\). What is the common difference (d)?

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Correct Answer

B. (4)

Step 1

Concept

\(a_{12}-a_5=7d=28\), so (d=4). Always count the difference of term positions carefully.

Step 2

Why this answer is correct

The correct answer is B. (4). \(a_{12}-a_5=7d=28\), so (d=4). Always count the difference of term positions carefully.

Step 3

Exam Tip

\(a_{12}-a_5=7d=28\), इसलिए (d=4)। दो पदों के बीच पद-संख्या का अंतर जरूर गिनें।

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Mathematics Answer, Explanation and Revision Hints

समांतर श्रेणी में \(a_5=18\) और \(a_{12}=46\) है। समान अंतर (d) क्या है? / In an arithmetic progression, \(a_5=18\) and \(a_{12}=46\). What is the common difference (d)?

Correct Answer: B. (4). Explanation: \(a_{12}-a_5=7d=28\), इसलिए (d=4)। दो पदों के बीच पद-संख्या का अंतर जरूर गिनें। / \(a_{12}-a_5=7d=28\), so (d=4). Always count the difference of term positions carefully.

Which concept should I revise for this Mathematics MCQ?

\(a_{12}-a_5=7d=28\), so (d=4). Always count the difference of term positions carefully.

What exam hint can help solve this Mathematics question?

\(a_{12}-a_5=7d=28\), इसलिए (d=4)। दो पदों के बीच पद-संख्या का अंतर जरूर गिनें।