How many ways are there to add three positive even numbers to get a sum of 20? Solve this problem by making a systematic list, then state your solution.

Help can you show your work too thanks

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921