$\sqrt{\dfrac{49}{144}}$ equals

$\sqrt{\dfrac{49}{144}}$ equals
  1. $\dfrac{7}{12}$
  2. $\dfrac{12}{7}$
  3. $\dfrac{7}{144}$
  4. $\dfrac{49}{12}$

Solution

$\sqrt{\dfrac{49}{144}} = \dfrac{\sqrt{49}}{\sqrt{144}} = \dfrac{7}{12}$.

Asked in: IMO

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