यदि \(a_1=7\) और \(a_4=189\) है तथा (r) धनात्मक है तो \(a_6\) क्या होगा?

If \(a_1=7\) and \(a_4=189\), and (r) is positive, what is \(a_6\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (1701)

Step 1

Concept

From \(189=7r^3\), (r=3) and \(a_6=7\cdot3^5=1701\). In exams find the ratio first.

Step 2

Why this answer is correct

The correct answer is A. (1701). From \(189=7r^3\), (r=3) and \(a_6=7\cdot3^5=1701\). In exams find the ratio first.

Step 3

Exam Tip

\(189=7r^3\) से (r=3) और \(a_6=7\cdot3^5=1701\) है। परीक्षा में पहले अनुपात निकालें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=7\) और \(a_4=189\) है तथा (r) धनात्मक है तो \(a_6\) क्या होगा? / If \(a_1=7\) and \(a_4=189\), and (r) is positive, what is \(a_6\)?

Correct Answer: A. (1701). Explanation: \(189=7r^3\) से (r=3) और \(a_6=7\cdot3^5=1701\) है। परीक्षा में पहले अनुपात निकालें। / From \(189=7r^3\), (r=3) and \(a_6=7\cdot3^5=1701\). In exams find the ratio first.

Which concept should I revise for this Mathematics MCQ?

From \(189=7r^3\), (r=3) and \(a_6=7\cdot3^5=1701\). In exams find the ratio first.

What exam hint can help solve this Mathematics question?

\(189=7r^3\) से (r=3) और \(a_6=7\cdot3^5=1701\) है। परीक्षा में पहले अनुपात निकालें।