Question

the product(-9)×(-5)×(-6)×(-3)is positive whereas the product (-9)×(-5)×6(-3)is negative why?
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Answer 1

The product if the first one is positive because there are four negative numbers and we know that even (number of) negative numbers results out to be positive after multiplication.

While, In the second case, there are three negative numbers which is odd number of negatives. And so, the odd number of negatives gives a negative as a product.

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