वर्गमूल सर्पिल में \(\sqrt{399}\) और \(\sqrt{401}\) की तुलना में कौन-सा कथन सही है?

Which statement is correct when comparing \(\sqrt{399}\) and \(\sqrt{401}\) in a square root spiral?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. \(\sqrt{399}\) (19) और (20) के बीच है, \(\sqrt{401}\) (20) और (21) के बीच है\(\sqrt{399}\) lies between (19) and (20), \(\sqrt{401}\) lies between (20) and (21)

Step 1

Concept

Since \(399<400=20^2\), \(\sqrt{399}<20\). Since (401>400), \(\sqrt{401}>20\).

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{399}\) (19) और (20) के बीच है, \(\sqrt{401}\) (20) और (21) के बीच है / \(\sqrt{399}\) lies between (19) and (20), \(\sqrt{401}\) lies between (20) and (21). Since \(399<400=20^2\), \(\sqrt{399}<20\). Since (401>400), \(\sqrt{401}>20\).

Step 3

Exam Tip

\(399<400=20^2\), इसलिए \(\sqrt{399}<20\)। (401>400), इसलिए \(\sqrt{401}>20\)।

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Mathematics Answer, Explanation and Revision Hints

वर्गमूल सर्पिल में \(\sqrt{399}\) और \(\sqrt{401}\) की तुलना में कौन-सा कथन सही है? / Which statement is correct when comparing \(\sqrt{399}\) and \(\sqrt{401}\) in a square root spiral?

Correct Answer: A. \(\sqrt{399}\) (19) और (20) के बीच है, \(\sqrt{401}\) (20) और (21) के बीच है / \(\sqrt{399}\) lies between (19) and (20), \(\sqrt{401}\) lies between (20) and (21). Explanation: \(399<400=20^2\), इसलिए \(\sqrt{399}<20\)। (401>400), इसलिए \(\sqrt{401}>20\)। / Since \(399<400=20^2\), \(\sqrt{399}<20\). Since (401>400), \(\sqrt{401}>20\).

Which concept should I revise for this Mathematics MCQ?

Since \(399<400=20^2\), \(\sqrt{399}<20\). Since (401>400), \(\sqrt{401}>20\).

What exam hint can help solve this Mathematics question?

\(399<400=20^2\), इसलिए \(\sqrt{399}<20\)। (401>400), इसलिए \(\sqrt{401}>20\)।