试题与答案

设集合M={1,2,3,4,5,6},S1,S2,…,Sk都是M的含两个元素的子

题型:填空题

题目:

设集合M={1,2,3,4,5,6},S1,S2,…,Sk都是M的含两个元素的子集,且满足:对任意的Si={ai,bi},Sj={aj,bj}(i≠j,i、j∈{1,2,3,…,k}),都有min{
ai
bi
bi
ai
}≠min{
aj
bj
bj
aj
}
(min{x,y}表示两个数x,y中的较小者),则k的最大值是______.

答案:

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参考答案:C

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