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Geometry (sorta)

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seven people meet and shake hands with eachother- how many handshakes occur?

(second question)
using inductive reasoning, write a formula for the number of handshakes if the number of people is n

  • Geometry (sorta) - ,

    nCr = n!/(r!*(n-r)!) Think about that.
    You need to go through the reasoning. Try making a diagram with 4 folks (A,B,C,D) shaking hands

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