गुणोत्तर श्रेढ़ी \(5,-20,80,-320,\ldots\) में \(a_5+a_3\) कितना है?

In the geometric progression \(5,-20,80,-320,\ldots\), what is \(a_5+a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (1360)

Step 1

Concept

\(a_3=80\) and \(a_5=1280\), so the sum is (1360). Keep signs in mind with a negative ratio.

Step 2

Why this answer is correct

The correct answer is D. (1360). \(a_3=80\) and \(a_5=1280\), so the sum is (1360). Keep signs in mind with a negative ratio.

Step 3

Exam Tip

\(a_3=80\) और \(a_5=1280\), इसलिए योग (1360) है। ऋणात्मक अनुपात में चिह्नों का ध्यान रखें।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेढ़ी \(5,-20,80,-320,\ldots\) में \(a_5+a_3\) कितना है? / In the geometric progression \(5,-20,80,-320,\ldots\), what is \(a_5+a_3\)?

Correct Answer: D. (1360). Explanation: \(a_3=80\) और \(a_5=1280\), इसलिए योग (1360) है। ऋणात्मक अनुपात में चिह्नों का ध्यान रखें। / \(a_3=80\) and \(a_5=1280\), so the sum is (1360). Keep signs in mind with a negative ratio.

Which concept should I revise for this Mathematics MCQ?

\(a_3=80\) and \(a_5=1280\), so the sum is (1360). Keep signs in mind with a negative ratio.

What exam hint can help solve this Mathematics question?

\(a_3=80\) और \(a_5=1280\), इसलिए योग (1360) है। ऋणात्मक अनुपात में चिह्नों का ध्यान रखें।