गुणोत्तर श्रेढ़ी में \(a_1=10\) और \(a_4=270\) है। धनात्मक (r) क्या होगा?

In a geometric progression, \(a_1=10\) and \(a_4=270\). What will be the positive (r)?

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

B. (3)

Step 1

Concept

\(a_4=a_1r^3\), so \(270=10r^3\) and \(r^3=27\), hence (r=3). Use the position gap as the exponent.

Step 2

Why this answer is correct

The correct answer is B. (3). \(a_4=a_1r^3\), so \(270=10r^3\) and \(r^3=27\), hence (r=3). Use the position gap as the exponent.

Step 3

Exam Tip

\(a_4=a_1r^3\), इसलिए \(270=10r^3\) और \(r^3=27\), अतः (r=3)। पदों की दूरी को घात बनाएं।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेढ़ी में \(a_1=10\) और \(a_4=270\) है। धनात्मक (r) क्या होगा? / In a geometric progression, \(a_1=10\) and \(a_4=270\). What will be the positive (r)?

Correct Answer: B. (3). Explanation: \(a_4=a_1r^3\), इसलिए \(270=10r^3\) और \(r^3=27\), अतः (r=3)। पदों की दूरी को घात बनाएं। / \(a_4=a_1r^3\), so \(270=10r^3\) and \(r^3=27\), hence (r=3). Use the position gap as the exponent.

Which concept should I revise for this Mathematics MCQ?

\(a_4=a_1r^3\), so \(270=10r^3\) and \(r^3=27\), hence (r=3). Use the position gap as the exponent.

What exam hint can help solve this Mathematics question?

\(a_4=a_1r^3\), इसलिए \(270=10r^3\) और \(r^3=27\), अतः (r=3)। पदों की दूरी को घात बनाएं।