The common factor of $6 x^{2} y$ and $18 y$ is

3 x

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12 x y

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6 y

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18 y

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Solution

The correct option is C $6 y$
$6 x^{2} y = 3 \times 2 \times x \times x \times y$
$18 y = 3 \times 3 \times 2 \times y$

$∴ 3 \times 2 \times y$ i.e $6 y$ is a common factor of $6 x^{2} y$ and $18 y$

So, option C is correct.

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