यदि किसी गुणोत्तर श्रेढ़ी में पहला पद (5) और सार्व अनुपात (3) है, तो चौथा पद क्या होगा?
If a geometric progression has first term (5) and common ratio (3), what is the fourth term?
Explanation opens after your attempt
C. (135)
Concept
\(a_4=5\cdot3^3=135\). Remember \(a_n=ar^{n-1}\) for the (n)th term.
Why this answer is correct
The correct answer is C. (135). \(a_4=5\cdot3^3=135\). Remember \(a_n=ar^{n-1}\) for the (n)th term.
Exam Tip
\(a_4=5\cdot3^3=135\)। (n)वें पद के लिए \(a_n=ar^{n-1}\) याद रखें।
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