Question

What will be sign of the product. If we multiply 90 negative integers and 9 positive integers​

Answer 1

Answer:

Step-by-step explanation:

General rule for product of different signs:

Positive × Positive = Positive

Negative × Negative = Positive

Positive × Negative = Negative

Negative × Positive = Negative

From the above rule, it is clear that:

If you multiply even number of negative values, it will become positive value.

If you multiply odd number of negative values, it will become negative value.

Here 90 is the even number.

So that product of 90 negative integers become positive value.

Multiplying 2 positive integers, it will remain positive integers.

So that product of 9 positive integers remain positive value.

Therefore, 90 negative integer and 9 positive integer are positive.

From the above rule, if you multiply two positive integers it gives a positive value only.

Hence product of 90 negative integers and 9 positive integers will get positive sign.

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Answer 2

Answer:

positive

Step-by-step explanation:

for example = -1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1 -1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1 -1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1+1+1+1+1+1+1+1+1+1  = 1 (if the number of negative numbers is even then the product will be positive and vice versa)