यदि \(a_6=224\) और (a=7) है तथा (r) धनात्मक है तो (r) क्या होगा?

If \(a_6=224\) and (a=7), and (r) is positive, what is (r)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (2)

Step 1

Concept

From \(224=7r^5\), \(r^5=32=2^5\), so (r=2). In exams identify \(r^5\) for the sixth term.

Step 2

Why this answer is correct

The correct answer is A. (2). From \(224=7r^5\), \(r^5=32=2^5\), so (r=2). In exams identify \(r^5\) for the sixth term.

Step 3

Exam Tip

\(224=7r^5\) से \(r^5=32=2^5\) इसलिए (r=2) है। परीक्षा में छठे पद के लिए \(r^5\) पहचानें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_6=224\) और (a=7) है तथा (r) धनात्मक है तो (r) क्या होगा? / If \(a_6=224\) and (a=7), and (r) is positive, what is (r)?

Correct Answer: A. (2). Explanation: \(224=7r^5\) से \(r^5=32=2^5\) इसलिए (r=2) है। परीक्षा में छठे पद के लिए \(r^5\) पहचानें। / From \(224=7r^5\), \(r^5=32=2^5\), so (r=2). In exams identify \(r^5\) for the sixth term.

Which concept should I revise for this Mathematics MCQ?

From \(224=7r^5\), \(r^5=32=2^5\), so (r=2). In exams identify \(r^5\) for the sixth term.

What exam hint can help solve this Mathematics question?

\(224=7r^5\) से \(r^5=32=2^5\) इसलिए (r=2) है। परीक्षा में छठे पद के लिए \(r^5\) पहचानें।