Mathematics, 15.10.2019 20:40, kinglightskin2k

You are hiking with three friends. you pass a group of six hikers going the other way. each person in one group greets each person in the other group. how many greetings are there?

18

24

36

12

Answers: 2

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You are hiking with three friends. you pass a group of six hikers going the other way. each person i...