किस अनुक्रम में सार्व अनुपात ऋणात्मक है?
Which sequence has a negative common ratio?
Explanation opens after your attempt
C. \(5,-10,20,-40,\ldots\)
Concept
In \(5,-10,20,-40,\ldots\), the common ratio is (-2). A negative ratio changes the signs of terms.
Why this answer is correct
The correct answer is C. \(5,-10,20,-40,\ldots\). In \(5,-10,20,-40,\ldots\), the common ratio is (-2). A negative ratio changes the signs of terms.
Exam Tip
\(5,-10,20,-40,\ldots\) में सार्व अनुपात (-2) है। ऋणात्मक अनुपात से पदों के चिह्न बदलते हैं।
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