Multiplicative inverse (reciprocal) of $\dfrac{7}{9}$ is

Multiplicative inverse (reciprocal) of $\dfrac{7}{9}$ is
  1. $\dfrac{9}{7}$
  2. $-\dfrac{7}{9}$
  3. $-\dfrac{9}{7}$
  4. $0$

Solution

$\dfrac{7}{9} \cdot \dfrac{9}{7} = 1$.

Asked in: NSO

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