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Number systems — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSNumber systems1 Mark
Question
If $\sqrt{7}=2.646$ then $\frac{1}{\sqrt{7}}=?$
✓

Answer

  1. 0.378

    Solution:
    $\frac{1}{\sqrt{7}}=\frac{1}{\sqrt{7}}\times\frac{\sqrt{7}}{\sqrt{7}}$
    $=\frac{\sqrt{7}}{7}$
    $=\frac{1}{7}\times\sqrt{7}$
    $=\frac{1}{7}\times2.646$
    $=0.378$

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