$\sqrt{\dfrac{2.25}{1.96}}$ equals

$\sqrt{\dfrac{2.25}{1.96}}$ equals
  1. $\dfrac{15}{14}$
  2. $\dfrac{14}{15}$
  3. $\dfrac{225}{196}$
  4. $\dfrac{1}{1.4}$

Solution

$\dfrac{\sqrt{2.25}}{\sqrt{1.96}} = \dfrac{1.5}{1.4} = \dfrac{15}{14}$.

Asked in: IMO

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