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Multiplication of a Negative Integer by a Negative Integer

Find the prod...

Question

Find the product of $(- 2) \times (- 2) \times (- 2) \times (- 2) . . . . .$ [20 times]

A

40

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B

(-40)

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C

- (2^{20})

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D

(-

2^{20}

)

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Solution

The correct option is D (- $2^{20}$ )
When you multiply negative integers, if the number of integers are even then the product will be positive.
$∴ (- 2) \times (- 2) \times (- 2) \times (- 2) . . . . .$ [20 times] = (- $2^{20})$

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Multiplication of a Negative Integer by a Negative Integer

Standard VII Mathematics

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