गुणोत्तर श्रेढ़ी \(5,-15,45,-135,\ldots\) का पाँचवाँ पद क्या है?
What is the fifth term of the geometric progression \(5,-15,45,-135,\ldots\)?
Explanation opens after your attempt
A. (405)
Concept
The common ratio is (-3), and the fifth term is ((-135)(-3)=405). With a negative ratio signs alternate.
Why this answer is correct
The correct answer is A. (405). The common ratio is (-3), and the fifth term is ((-135)(-3)=405). With a negative ratio signs alternate.
Exam Tip
सार्व अनुपात (-3) है और पाँचवाँ पद ((-135)(-3)=405) है। ऋणात्मक अनुपात में चिह्न बदलता है।
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