Mathematics, 20.02.2021 01:20 morgan4411

PLEASE HELP ME ASAP!! MY CLASS IN 6 MINUTES! At a gathering of 12 people, there are 5 people who all know each other and 7 people who know no one. People who do not know each other shake hands. How many handshakes occur?

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PLEASE HELP ME ASAP!! MY CLASS IN 6 MINUTES! At a gathering of 12 people, there are 5 people who al...