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if 9 people greet each other at a meeting by shaking hands with one another, how many handshakes will take place?
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if 9 people greet each other at a meeting by shaking hands with one another, how many handshakes will take place?

User Pixelearth
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81 because each person has 9 people to greet and there’s 9 people so 9x9=81
User Lxa
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