Fuller, Tuesday. "What Are Addends In Math Addition Problems?"sciencing.com, https://www.sciencing.com/addends-math-addition-problems-8163341/. 27 October 2020. APA Fuller, Tuesday. (2020, October 27). What Are Addends In Math Addition Problems?.sciencing.com. Retrieved from https://www....
In both cases, they must be all equal to mm (since mm is their average). I note that this argument is presented in some form by bof and Saikat on the 3rd Math SE thread linked by Izaak van Dongen, but not very clearly. So I prefer mine or wikipedia's inst...
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There is a number puzzle in base9, where three addends are formed using the distinct digits0 through8. Which digit does not appear in the puzzle? Find it, and also find the largest four-digit number formed using the four Chinese characters for "I love math"下面是一个九进制下的数字谜,...