题目内容
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[主观题]
如果U={1,2,3,4,5,6},A={1,2,3},B={2,4,6},求: (1)A' (2)B' (3)A'∪B' (4)A'∩B'
如果U={1,2,3,4,5,6},A={1,2,3},B={2,4,6},求:
(1)A' (2)B' (3)A'∪B' (4)A'∩B'
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如果U={1,2,3,4,5,6},A={1,2,3},B={2,4,6},求:
(1)A' (2)B' (3)A'∪B' (4)A'∩B'
A.{1,2,3,4,5,6}
B.{1,3,4,6}
C.{1,2,3,4,5,6,7,8}
D.{1,2,3,4,5,6,7,8,9}
A.P{X=n}=1/6,(n=1,2,3,4,5,6)
B.P{X=n}=n/6(n=1,2,3,4,5,6)
C.P{X=n}=(n-1)/6(n=1,2,3,4,5.6)
D.P{X=n}=1-n/6(n=1,2,3,4,5,6)