10 × (–12) + (–12) × (–30) = ?

240

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462

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-462

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Solution

The correct option is A 240
$a \times b + a \times c = a \times (b + c)$
(Distributive property of multiplication over addition)

$\Rightarrow$ 10 × (–12) + (–12) × (–30)
= $(- 12) \times (10 + (- 30))$
= $(- 12) \times (10 - 30)$
= $(- 12) \times (- 20)$
= 240

(When two negative integers are multiplied, the product is always positive)

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Frequency	$8$	$10$	$12$	$15$

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