Question

Look at the following numbers:

−2, −1, 0, 1

Which pair of numbers has a sum of zero?

Answer 1

-1+1

Explanation:

Answer 2

-1, 1

Negative one and positive one total up with a sum of 0.

-2 + 0 is -2.

0 and 1 is 1.

0 and -1 is -1.

So, it has to be -1 and 1.