अनुक्रम \(5,10,20,40,\ldots\) में कौन सा पद (320) है?
In the sequence \(5,10,20,40,\ldots\), which term is (320)?
Explanation opens after your attempt
Correct Answer
C. (7)वाँ(7)th
Concept
The terms are \(5\times2^{n-1}\), and \(5\times2^6=320\). Hence it is the (7)th term.
Why this answer is correct
The correct answer is C. (7)वाँ / (7)th. The terms are \(5\times2^{n-1}\), and \(5\times2^6=320\). Hence it is the (7)th term.
Exam Tip
पद \(5\times2^{n-1}\) हैं और \(5\times2^6=320\) है। इसलिए यह (7)वाँ पद है।
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