यदि \(a_n=\frac{n}{2n-1}\) है तो पहला पद जो \(\frac{3}{5}\) से छोटा है कौन सा है?
If \(a_n=\frac{n}{2n-1}\), which is the first term less than \(\frac{3}{5}\)?
Explanation opens after your attempt
B. (4)वाँ(4)th
Concept
From \(\frac{n}{2n-1}<\frac{3}{5}\), (5n<6n-3), so (n>3). The first integer is (4).
Why this answer is correct
The correct answer is B. (4)वाँ / (4)th. From \(\frac{n}{2n-1}<\frac{3}{5}\), (5n<6n-3), so (n>3). The first integer is (4).
Exam Tip
\(\frac{n}{2n-1}<\frac{3}{5}\) से (5n<6n-3) और (n>3) मिलता है। पहला पूर्णांक (4) है।
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