यदि \(a_n=30-4n\) है, तो इस समानांतर श्रेढ़ी का पहला पद क्या है?
If \(a_n=30-4n\), what is the first term of this arithmetic progression?
Explanation opens after your attempt
B. (26)
Concept
For the first term (n=1), so \(a_1=30-4=26\). Do not use (n=0) when finding the first term of a sequence.
Why this answer is correct
The correct answer is B. (26). For the first term (n=1), so \(a_1=30-4=26\). Do not use (n=0) when finding the first term of a sequence.
Exam Tip
पहले पद के लिए (n=1), इसलिए \(a_1=30-4=26\)। अनुक्रम में पहला पद निकालते समय (n=0) नहीं रखते।
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