sweetyj2019 sweetyj2019

24-10-2020
Mathematics

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At a gathering of 10 people, there are 4 people who all know each other and 6 people who know no one. People who do not know each other shake hands. How many handshakes occur?

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davidstapleton2 davidstapleton2

24-10-2020

Answer:

9

Step-by-step explanation:

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yeabsiratibebu807 yeabsiratibebu807

28-10-2020

Answer:

4

Step-by-step explanation:

it is four that know each other but they are not shake hand

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