समांतर श्रेणी \(7,11,15,19,\ldots\) का सामान्य पद कौन-सा है?
Which is the general term of the arithmetic progression \(7,11,15,19,\ldots\)?
Explanation opens after your attempt
B. \(a_n=4n+3\)
Concept
The first term is (7) and the difference is (4), so \(a_n=4n+3\). In exams, use (a_n=a+(n-1)d).
Why this answer is correct
The correct answer is B. \(a_n=4n+3\). The first term is (7) and the difference is (4), so \(a_n=4n+3\). In exams, use (a_n=a+(n-1)d).
Exam Tip
पहला पद (7) और अंतर (4) है, इसलिए \(a_n=4n+3\) है। परीक्षा में (a_n=a+(n-1)d) लगाएँ।
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