-1 -1 -1 -1 x - 80 times -

When even number of negative integers are nbsp;multiplied, nbsp;the product will be a positive integer. ( 1) x ( 1) x ( 1) x ( 1) x ... 80 times = ( 1 ... 8 ...

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Byju's Answer

Standard VII

Mathematics

Closure Property for Multiplication on Integers

-1 ×-1 ×-1 ×-...

Question

(-1) x (-1) x (-1) x (-1) x ... 80 times = ___

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Solution

When even number of negative integers are multiplied, the product will be a positive integer.

(-1) x (-1) x (-1) x (-1) x ... 80 times

= (-1 ... 80 times)[1 x 1 x 1 x 1 x ... 80 times]

= (+) (1 x 1 x 1 x 1 x ... 80 times)

= 1 x 1 x 1 x 1 x ... 80 times
= 1

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(-1) x (-1) x (-1) x (-1) x ... 80 times = ___

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Q. Choose the correct option for the following.
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(-1) x (-1) x (-1) x (-1) x ... 80 times = ___

When even number of negative integers are multiplied, the product will be a positive integer. (-1) x (-1) x (-1) x (-1) x ... 80 times = (-1 ... 80 times)[1 x 1 x 1 x 1 x ... 80 times] = (+) (1 x 1 x 1 x 1 x ... 80 times) = 1 x 1 x 1 x 1 x ... 80 times = 1

When even number of negative integers are multiplied, the product will be a positive integer.

(-1) x (-1) x (-1) x (-1) x ... 80 times

= (-1 ... 80 times)[1 x 1 x 1 x 1 x ... 80 times]

= (+) (1 x 1 x 1 x 1 x ... 80 times)

= 1 x 1 x 1 x 1 x ... 80 times
= 1