Find the value of the expression by using suitable arrangement: (−6) × (−21) × (−5)

630

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-630

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360

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-360

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Solution

The correct option is B -630
(−6) × (−21) × (−5)
= [(−6) × (−5)] × (−21)
(by using associative property)
= 30 × (−21)
= -630

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