गुणोत्तर श्रेढ़ी \(9,-27,81,-243,\ldots\) में \(a_6+a_4\) कितना है?

In the geometric progression \(9,-27,81,-243,\ldots\), what is \(a_6+a_4\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (-1944)

Step 1

Concept

\(a_4=-243\) and \(a_6=-2187\), so the sum is (-2430). The correct option should include (-2430).

Step 2

Why this answer is correct

The correct answer is A. (-1944). \(a_4=-243\) and \(a_6=-2187\), so the sum is (-2430). The correct option should include (-2430).

Step 3

Exam Tip

\(a_4=-243\) और \(a_6=-2187\), इसलिए योग (-2430) नहीं बल्कि (-2430) है। सही विकल्पों में (-2430) होना चाहिए।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेढ़ी \(9,-27,81,-243,\ldots\) में \(a_6+a_4\) कितना है? / In the geometric progression \(9,-27,81,-243,\ldots\), what is \(a_6+a_4\)?

Correct Answer: A. (-1944). Explanation: \(a_4=-243\) और \(a_6=-2187\), इसलिए योग (-2430) नहीं बल्कि (-2430) है। सही विकल्पों में (-2430) होना चाहिए। / \(a_4=-243\) and \(a_6=-2187\), so the sum is (-2430). The correct option should include (-2430).

Which concept should I revise for this Mathematics MCQ?

\(a_4=-243\) and \(a_6=-2187\), so the sum is (-2430). The correct option should include (-2430).

What exam hint can help solve this Mathematics question?

\(a_4=-243\) और \(a_6=-2187\), इसलिए योग (-2430) नहीं बल्कि (-2430) है। सही विकल्पों में (-2430) होना चाहिए।