Mathematics, 20.11.2019 01:31, jamaicalove2880

Four married couples. shake hands, but no one shakes hands with their own spouse (or with themselves, of course). at the end of the party, how many people they shook hands with and receives seven different responses. how many people did rose shake hands with?

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Four married couples. shake hands, but no one shakes hands with their own spouse (or with themselves...