यदि \(a_1=4\) और \(a_4=500\) है, तथा (r) धनात्मक है, तो \(a_5\) क्या होगा?

If \(a_1=4\) and \(a_4=500\), and (r) is positive, what will \(a_5\) be?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (2500)

Step 1

Concept

\(500=4r^3\), so \(r^3=125\) and (r=5), hence \(a_5=2500\). First find the ratio and then form the next term.

Step 2

Why this answer is correct

The correct answer is C. (2500). \(500=4r^3\), so \(r^3=125\) and (r=5), hence \(a_5=2500\). First find the ratio and then form the next term.

Step 3

Exam Tip

\(500=4r^3\), इसलिए \(r^3=125\) और (r=5), अतः \(a_5=2500\)। पहले अनुपात निकालें फिर अगला पद बनाएं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=4\) और \(a_4=500\) है, तथा (r) धनात्मक है, तो \(a_5\) क्या होगा? / If \(a_1=4\) and \(a_4=500\), and (r) is positive, what will \(a_5\) be?

Correct Answer: C. (2500). Explanation: \(500=4r^3\), इसलिए \(r^3=125\) और (r=5), अतः \(a_5=2500\)। पहले अनुपात निकालें फिर अगला पद बनाएं। / \(500=4r^3\), so \(r^3=125\) and (r=5), hence \(a_5=2500\). First find the ratio and then form the next term.

Which concept should I revise for this Mathematics MCQ?

\(500=4r^3\), so \(r^3=125\) and (r=5), hence \(a_5=2500\). First find the ratio and then form the next term.

What exam hint can help solve this Mathematics question?

\(500=4r^3\), इसलिए \(r^3=125\) और (r=5), अतः \(a_5=2500\)। पहले अनुपात निकालें फिर अगला पद बनाएं।