यदि समानांतर श्रेढ़ी में \(a_7=58\) और (d=8) है, तो \(a_4\) क्या होगा?
If an arithmetic progression has \(a_7=58\) and (d=8), what is \(a_4\)?
Explanation opens after your attempt
B. (34)
Concept
From \(a_7\) to \(a_4\), move back (3) gaps, so (a_4=58-3(8)=34). When moving backward, subtract the common difference.
Why this answer is correct
The correct answer is B. (34). From \(a_7\) to \(a_4\), move back (3) gaps, so (a_4=58-3(8)=34). When moving backward, subtract the common difference.
Exam Tip
\(a_7\) से \(a_4\) तक (3) अंतर पीछे जाना है, इसलिए (a_4=58-3(8)=34)। पीछे जाते समय समान अंतर घटाएं।
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