满足{0,1,2}真包含于A⊆{0,1,2,3,4,5}的集合A的个数是______个
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![满足{0,1,2}真包含于A⊆{0,1,2,3,4,5}的集合A的个数是______个](/uploads/image/z/10183404-12-4.jpg?t=%E6%BB%A1%E8%B6%B3%EF%BD%9B0%2C1%2C2%EF%BD%9D%E7%9C%9F%E5%8C%85%E5%90%AB%E4%BA%8EA%26%238838%3B%EF%BD%9B0%2C1%2C2%2C3%2C4%2C5%EF%BD%9D%E7%9A%84%E9%9B%86%E5%90%88A%E7%9A%84%E4%B8%AA%E6%95%B0%E6%98%AF______%E4%B8%AA)
满足{0,1,2}真包含于A⊆{0,1,2,3,4,5}的集合A的个数是______个
满足{0,1,2}真包含于A⊆{0,1,2,3,4,5}的集合A的个数是______个
满足{0,1,2}真包含于A⊆{0,1,2,3,4,5}的集合A的个数是______个
满足{0,1,2}真包含于A⊆{0,1,2,3,4,5}的集合A的个数是__7____个
A中至少有0,1,2;
个数=2³-1=8-1=7个
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