满足{3,4}⊆M⊆{0,1,2,3,4}的所有集合M有_个.
问题描述:
满足{3,4}⊆M⊆{0,1,2,3,4}的所有集合M有______个.
答
所有的集合M有:
{3,4},{3,4,0},{3,4,1},{3,4,2},
{3,4,0,1},{3,4,0,2},{3,4,1,2},{3,4,0,1,2}.
共8个.
故答案为8.