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Mathematics, 10.03.2020 08:30 TheOriginal2x
Arrange the steps in correct order to show that the sum, over the set of people at a party, of the number of people a person has shaken hands with, is even. Assume that no one shakes his or her own hand.
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Arrange the steps in correct order to show that the sum, over the set of people at a party, of the n...
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