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A.1 480个 B.1 440个 C.1 200个 D.1 140个
从0,1,2,3,4,5,6,7,8,9这10个数中取出3个数,使其和为不小于10的偶数,不同的取法有________种.
若A={0,1,2,4,5,7,8}, B={1,3,6,7,9},C={3,4,7,8},那么集合 (A∩B)∪C=____________________.
从1,3,5,7,9五个数字中选2个,0,2,4,6,8五个数字中选3个,能组成多少个无重复数字的五位数?