Gary L. answered • 08/27/19
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There are 11 different answers to this problem if you limit it to use two problems. In that case possibilities would start with 0+20, 1+19, and 2+18. This trend continues where the first number increases by 1 as the second decreases by 1 until you get to 10+10; after that point your number pairs would match previous ones. If you use more numbers to combine into 20, the number of answers will change as well.
