गुणोत्तर श्रेढ़ी \(5,-15,45,-135,\ldots\) का पाँचवाँ पद क्या है?

What is the fifth term of the geometric progression \(5,-15,45,-135,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (405)

Step 1

Concept

The common ratio is (-3), and the fifth term is ((-135)(-3)=405). With a negative ratio signs alternate.

Step 2

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.

Step 3

Exam Tip

सार्व अनुपात (-3) है और पाँचवाँ पद ((-135)(-3)=405) है। ऋणात्मक अनुपात में चिह्न बदलता है।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेढ़ी \(5,-15,45,-135,\ldots\) का पाँचवाँ पद क्या है? / What is the fifth term of the geometric progression \(5,-15,45,-135,\ldots\)?

Correct Answer: A. (405). Explanation: सार्व अनुपात (-3) है और पाँचवाँ पद ((-135)(-3)=405) है। ऋणात्मक अनुपात में चिह्न बदलता है। / The common ratio is (-3), and the fifth term is ((-135)(-3)=405). With a negative ratio signs alternate.

Which concept should I revise for this Mathematics MCQ?

The common ratio is (-3), and the fifth term is ((-135)(-3)=405). With a negative ratio signs alternate.

What exam hint can help solve this Mathematics question?

सार्व अनुपात (-3) है और पाँचवाँ पद ((-135)(-3)=405) है। ऋणात्मक अनुपात में चिह्न बदलता है।