Difference between revisions of "User:Aops-g5-gethsemanea2/AoPS Wiki"
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Revision as of 09:05, 9 August 2020
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Aops-g5-gethsemanea2's Wiki project is administered by the user Aops-g5-gethsemanea2 for supporting educational content useful to avid math students.
and each of its non-empty subsets a unique alternating sum is defined as follows. Arrange the numbers in the subset in decreasing order and then, beginning with the largest, alternately add and subtract successive numbers. For example, the alternating sum for 
is 
and for 
it is simply 
. Find the sum of all such alternating sums for 
.
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