यदि \(a_2=15\) और \(a_6=1215\) है, तथा अनुपात धनात्मक है, तो \(a_7\) क्या होगा?

If \(a_2=15\) and \(a_6=1215\), and the ratio is positive, what will \(a_7\) be?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (3645)

Step 1

Concept

\(a_6=a_2r^4\), so (r=3), hence \(a_7=1215\cdot3=3645\). First find the ratio and then move forward.

Step 2

Why this answer is correct

The correct answer is B. (3645). \(a_6=a_2r^4\), so (r=3), hence \(a_7=1215\cdot3=3645\). First find the ratio and then move forward.

Step 3

Exam Tip

\(a_6=a_2r^4\), इसलिए (r=3), अतः \(a_7=1215\cdot3=3645\)। पहले अनुपात निकालकर आगे बढ़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_2=15\) और \(a_6=1215\) है, तथा अनुपात धनात्मक है, तो \(a_7\) क्या होगा? / If \(a_2=15\) and \(a_6=1215\), and the ratio is positive, what will \(a_7\) be?

Correct Answer: B. (3645). Explanation: \(a_6=a_2r^4\), इसलिए (r=3), अतः \(a_7=1215\cdot3=3645\)। पहले अनुपात निकालकर आगे बढ़ें। / \(a_6=a_2r^4\), so (r=3), hence \(a_7=1215\cdot3=3645\). First find the ratio and then move forward.

Which concept should I revise for this Mathematics MCQ?

\(a_6=a_2r^4\), so (r=3), hence \(a_7=1215\cdot3=3645\). First find the ratio and then move forward.

What exam hint can help solve this Mathematics question?

\(a_6=a_2r^4\), इसलिए (r=3), अतः \(a_7=1215\cdot3=3645\)। पहले अनुपात निकालकर आगे बढ़ें।