Question

Look at the following-2,-1,0,2 which pair of the numbers has sum of 0

Answer 1

-2+-1, -2+0, -1+0, -1+2, and 0+2, do not equal 2. The only one that works is -2+2.

Answer 2

-2 and 2

-2 0 and 2

i hope this helps

you can try to pair ech of them and calculate like -2 with -1 no then -2 0 no -2 2 yes then with pair of three -2 -1 0 no etc-2 0 -2 yes