Question

2 What will be the sign of the product if we multiply together as negative integers and 3 positive integers? () (-1). 2m times, m is a natural number ?​

Answer 1

Step-by-step explanation:

If the number of negative integers in a product is even, then the product is a positive integer and if the number of negative integers in a product is odd, then the product is a negative integer

And, any number of positive integers will always give a positive integer.

So, the sign of the product will be decided by the number of negative integers.

(a) 8 negative integers and 3 positive integers: Even number of negative integers, hence product is positive.

(b) 5 negative integers and 4 positive integers: Odd number of negative integers, hence product is negative.

(c) (–1), twelve times: Even number of negative integers, hence product is positive.

(d) (–1), 2m times, m is a natural number: Even number of negative integers, hence product is positive.