3.(a)   Replace  in each of the following by the correct number :

    (a)  \frac{2}{7}=\frac{8}{\square }

Answers (1)

The correct number is 28.

   \frac{2}{7}\times \frac{4}{4} =\ \frac{8}{28}\ =\frac{8}{\square }

Thus    \square\ =\ 28.

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