Question
Simplify:
$\frac{3}{7} \times \frac{5}{9} \times 4 \frac{1}{5}$

Answer

$\frac{3}{7} \times \frac{5}{9} \times 4 \frac{1}{5}=\frac{3}{7} \times \frac{5}{9} \times \frac{21}{5}$
$=\frac{3 \times 5 \times 21}{7 \times 9 \times 5}=1$

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