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You are meeting with four other people. If each person shakes hands once with each other person, how many handshakes are given
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You are meeting with four other people. If each person shakes hands once with each other person, how many handshakes are given

User Konstantin Vitkovsky
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10. imagine each person as the poits of a pentagon. from there, connect each point with each other. the connections between each point(person) should be 10.
User Jun Hsieh
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