Find the product of
$5 a b c, 7 a b^{2} a n d - 2 a^{3} .$

- 35 a^{6} b^{3} c^{2}

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- 35 a^{6} b^{3} c

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- 70 a^{5} b^{3} c

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- 70 a^{6} b^{3} c^{2}

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Solution

The correct option is C $- 70 a^{5} b^{3} c$
$= 5 a b c \times (7 a b^{2}) \times (- 2 a^{3})$
$= 5 \times (- 2) \times 7 \times a \times a \times a^{3} \times b \times b^{2} \times c$
$= - 70 a^{5} b^{3} c$

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