1.若集合A={2,a,{ a },4},则下列表述正确的是( ).A.{a,{a}}A B.{ a }A C.{2}A D. A2.设B = { {2},3,4,2},那么下列命题中错误的是( ). A.{2} B B.{2,{2},3,4}B C.{2}ɨ
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 18:27:48
![1.若集合A={2,a,{ a },4},则下列表述正确的是( ).A.{a,{a}}A B.{ a }A C.{2}A D. A2.设B = { {2},3,4,2},那么下列命题中错误的是( ). A.{2} B B.{2,{2},3,4}B C.{2}ɨ](/uploads/image/z/3899010-66-0.jpg?t=1%EF%BC%8E%E8%8B%A5%E9%9B%86%E5%90%88A%EF%BC%9D%7B2%2Ca%2C%7B+a+%7D%2C4%7D%2C%E5%88%99%E4%B8%8B%E5%88%97%E8%A1%A8%E8%BF%B0%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF%28+%29%EF%BC%8EA%EF%BC%8E%7Ba%2C%7Ba%7D%7D%26%2361646%3BA+B%EF%BC%8E%7B+a+%7D%26%2361645%3BA+C%EF%BC%8E%7B2%7D%26%2361646%3BA+D%EF%BC%8E+%26%2361646%3BA2%EF%BC%8E%E8%AE%BEB+%3D+%7B+%7B2%7D%2C3%2C4%2C2%7D%2C%E9%82%A3%E4%B9%88%E4%B8%8B%E5%88%97%E5%91%BD%E9%A2%98%E4%B8%AD%E9%94%99%E8%AF%AF%E7%9A%84%E6%98%AF%EF%BC%88+%EF%BC%89%EF%BC%8E+A%EF%BC%8E%7B2%7D+B+B%EF%BC%8E%7B2%2C%7B2%7D%2C3%2C4%7D%26%2361644%3BB+C%EF%BC%8E%7B2%7D%26%23616)
xVJQ(ЙɥD1P$Ƨ"cHIƶZ^
Ƙ؟3<ٓ%}9kg42/
:۽ͫ:1A[AYZ YӈNqh6;nZn}Sdjd Y]IH,BQ8$r (s'H@Uh¯` ??0[a@A2oDeq.$ d?M^%H=
L͔M)$*]ZJ<
<. m؊){FN