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Number systems — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSNumber systems1 Mark
Question
The value of $\sqrt{20}\times\sqrt{5}$ is :
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Answer

  1. $10$
    Solution:
    $\sqrt{20}\times\sqrt{5}$
    $=2\sqrt{5}\times\sqrt{5}$
    $=2\times5$
    $=10$

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