अनुक्रम \(4,9,14,19,\ldots\) का सामान्य पद क्या है?
What is the general term of the sequence \(4,9,14,19,\ldots\)?
Explanation opens after your attempt
B. \(a_n=5n-1\)
Concept
The first term is (4) and the difference is (5), so \(a_n=5n-1\). In exams, always check the first term by putting (n=1).
Why this answer is correct
The correct answer is B. \(a_n=5n-1\). The first term is (4) and the difference is (5), so \(a_n=5n-1\). In exams, always check the first term by putting (n=1).
Exam Tip
पहला पद (4) और अंतर (5) है, इसलिए \(a_n=5n-1\) है। परीक्षा में (n=1) रखकर पहला पद जरूर जाँचें।
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