$\sqrt{7} \cdot \sqrt{7} \cdot \sqrt{7}$ equals

$\sqrt{7} \cdot \sqrt{7} \cdot \sqrt{7}$ equals
  1. $7\sqrt{7}$
  2. $\sqrt{343}$ only
  3. $49$
  4. $21$

Solution

$(\sqrt{7})^{3} = 7\sqrt{7}$.

Asked in: MH-SSC-9

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