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OpenStudy (usukidoll):
Prove by induction that for any n belonging to natural numbers the total number of handshakes that have taken place when n couples are present is 2n^2-2n
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OpenStudy (usukidoll):
basis step ... let n = 1 |dw:1392684036913:dw| so one person means no handshakes.. hmmm inductive step P(k) |dw:1392684062973:dw|
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