The product of an even number of a negative integer is always $()$

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Solution

Let the even number of negative integers be $- 1, - 2, - 3$ and $- 4$ so total $4$ i.e. even.
So, $(- 1) \times (- 2) \times (- 3) \times (- 4) = + 24$ it is Positive.
Hence The product of an even number of a negative integer is always $($ Positive $)$

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