Question

what will be the sign if we multiply 90 negative and thousand positive integers​

Answer 1

Answer:

The sign will be plus.

Step-by-step explanation:

Since negative multiplied negatives becomes plus, we can assume 90 negatives numbers to be in 45 pairs. Each of the pairs will have 2 negative numbers which when multiplied become positive. Hence that makes 45 +ve numbers. Total=1045 positive numbers which when multiplied becomes positive.