Answer
$\frac{2}{147}$
Work Step by Step
$\frac{3}{35} \times \frac{10}{63} = \frac{3*10}{35*63} = \frac{2 * 3 * 5}{3 * 3 * 5 * 7 * 7} = \frac{2}{3 * 7 * 7} \times \frac{3 * 5}{3 * 5} = \frac{2}{147}$
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