यदि \(a_2=16\) और \(a_5=1024\) है, तथा अनुपात धनात्मक है, तो (r) क्या है?

If \(a_2=16\) and \(a_5=1024\), and the ratio is positive, what is (r)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (4)

Step 1

Concept

\(a_5=a_2r^3\), so \(1024=16r^3\) and \(r^3=64\), hence (r=4). The gap between positions decides the exponent.

Step 2

Why this answer is correct

The correct answer is C. (4). \(a_5=a_2r^3\), so \(1024=16r^3\) and \(r^3=64\), hence (r=4). The gap between positions decides the exponent.

Step 3

Exam Tip

\(a_5=a_2r^3\), इसलिए \(1024=16r^3\) और \(r^3=64\), अतः (r=4)। पदों की दूरी घात तय करती है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_2=16\) और \(a_5=1024\) है, तथा अनुपात धनात्मक है, तो (r) क्या है? / If \(a_2=16\) and \(a_5=1024\), and the ratio is positive, what is (r)?

Correct Answer: C. (4). Explanation: \(a_5=a_2r^3\), इसलिए \(1024=16r^3\) और \(r^3=64\), अतः (r=4)। पदों की दूरी घात तय करती है। / \(a_5=a_2r^3\), so \(1024=16r^3\) and \(r^3=64\), hence (r=4). The gap between positions decides the exponent.

Which concept should I revise for this Mathematics MCQ?

\(a_5=a_2r^3\), so \(1024=16r^3\) and \(r^3=64\), hence (r=4). The gap between positions decides the exponent.

What exam hint can help solve this Mathematics question?

\(a_5=a_2r^3\), इसलिए \(1024=16r^3\) और \(r^3=64\), अतः (r=4)। पदों की दूरी घात तय करती है।