गुणोत्तर श्रेणी \(5,20,80,320,\ldots\) के पहले (6) पदों का योग क्या है?

What is the sum of the first (6) terms of the geometric progression \(5,20,80,320,\ldots\)?

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

A. (6825)

Step 1

Concept

(S_6=\frac{5\(4^6-1\)}{4-1}=6825). In exams, use (\frac{a\(r^n-1\)}{r-1}) for (r>1).

Step 2

Why this answer is correct

The correct answer is A. (6825). (S_6=\frac{5\(4^6-1\)}{4-1}=6825). In exams, use (\frac{a\(r^n-1\)}{r-1}) for (r>1).

Step 3

Exam Tip

(S_6=\frac{5\(4^6-1\)}{4-1}=6825) है। परीक्षा में (r>1) के लिए (\frac{a\(r^n-1\)}{r-1}) उपयोग करें।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेणी \(5,20,80,320,\ldots\) के पहले (6) पदों का योग क्या है? / What is the sum of the first (6) terms of the geometric progression \(5,20,80,320,\ldots\)?

Correct Answer: A. (6825). Explanation: (S_6=\frac{5\(4^6-1\)}{4-1}=6825) है। परीक्षा में (r>1) के लिए (\frac{a\(r^n-1\)}{r-1}) उपयोग करें। / (S_6=\frac{5\(4^6-1\)}{4-1}=6825). In exams, use (\frac{a\(r^n-1\)}{r-1}) for (r>1).

Which concept should I revise for this Mathematics MCQ?

(S_6=\frac{5\(4^6-1\)}{4-1}=6825). In exams, use (\frac{a\(r^n-1\)}{r-1}) for (r>1).

What exam hint can help solve this Mathematics question?

(S_6=\frac{5\(4^6-1\)}{4-1}=6825) है। परीक्षा में (r>1) के लिए (\frac{a\(r^n-1\)}{r-1}) उपयोग करें।