Asked by dan

i have a list of 5 different numbers. the sum of 2 of the numbers is 0. the sum of 2 of the numbers is 1. the sum of 2 of the numbers is 2. the sum of 2 of the numbers is 3. the sum of 2 of the numbers is 4.the sum of 2 of the numbers is 5.the sum of 2 of the numbers is 6. the sum of 2 of the numbers is 7.the sum of 2 of the numbers is 8.the sum of 2 of the numbers is 9.the sum of 2 of the numbers is 10.the sum of 2 of the numbers is 11.the sum of 2 of the numbers is 12. what are the numbers?
Answered by dan
please show how u got the answer
Answered by Steve
obviously we have

a -a b c d

Not much to do now but start guessing. If a=1, we have

1 -1 2 3 5 7 satisfies everything except sum=11

Gotta go for now. Maybe you can fill it in before I get back. :-(
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