怎样计算A和B的交集与C的和集
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A=(4.8.12.16.20.24.28.32.36.40.44.48.52.56.60.64.68.72.78.80.84.88.92.96.100),
B=(5.10.15.20.25.30.35.40.45.50.55.60.65.70.75.80.85.90.95.100)
c(6.12.18.24.30.36.42.48.54.60.66.72.78.84.90.96)
A交B交C=(60)
card(AB)=(4.5.6.8.10.12.15.16.18.20.24.25.28.30.32.35.36.40.42.44.45.48.50.52.54.55.56.65.66.68.70.7275.76.78.80.84.85.88.90.92.95.96.100)
B=(5.10.15.20.25.30.35.40.45.50.55.60.65.70.75.80.85.90.95.100)
c(6.12.18.24.30.36.42.48.54.60.66.72.78.84.90.96)
A交B交C=(60)
card(AB)=(4.5.6.8.10.12.15.16.18.20.24.25.28.30.32.35.36.40.42.44.45.48.50.52.54.55.56.65.66.68.70.7275.76.78.80.84.85.88.90.92.95.96.100)
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