[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f1LzMipmLY-Wik5fNNqnQ4K7WBm-UAZAM_6JYMRxWa6I":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":27,"type":79},[],"2025-10-13 14:32:23",217422252,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},54,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_45380468","导论","口袋中有一只球,不知它是黑的还是白的.现再往口袋中放入一只白球,然后从口袋中任意取出一只,发现是白球.口袋中原来的那只球是白球的概率为_____",[17,29,38,46,55,64,73,80,85,88],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2026-01-05 09:59:39",217422237,[22,23,24,25],"2\u002F3","13\u002F24","1\u002F3","5\u002F24","甲袋中有5只白球, 7 只红球;乙袋中有4只白球, 2只红球. 从两个袋子中任取一袋, 然后从所取到的袋子中任取一球,则取到的球是白球的概率为()","v1",0,{"answer":30,"createTime":19,"id":31,"options":32,"question":37,"source":27,"type":28},[],217422238,[33,34,35,36],"1\u002F15","2\u002F9","3\u002F10","1\u002F5","10个产品中有7个正品、3个次品,从中不放回地抽取两个, 已知第一个取到次品,则第二个又取到次品的概率为()",{"answer":39,"createTime":19,"id":40,"options":41,"question":45,"source":27,"type":28},[],217422240,[42,43,44,24],"1\u002F12","1\u002F6","1\u002F4","已知P(A)=1\u002F4,P(B|A)=1\u002F3,P(A|B)=1\u002F2,则P(A∪B)=()",{"answer":47,"createTime":19,"id":48,"options":49,"question":54,"source":27,"type":28},[],217422242,[50,51,52,53],"P(A|B)=P(A)","P(B|A)=P(B)\u002FP(A)","P(A|B)=0","P(AB)=P(A)P(B)","设A、B是两个互相对立的事件,且P(A)>0,P(B)>0,则下列结论正确的是( )",{"answer":56,"createTime":19,"id":57,"options":58,"question":63,"source":27,"type":28},[],217422244,[59,60,61,62],"P(A)≤P(A|B)","P(A)<P(A|B)","P(A)>P(A|B)","P(A)≥P(A|B)","设P(B)>0,且A\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F66396b9ef10dc4b1f8d5a58967bb120a.webp\">B,则下列必然成立的是( )",{"answer":65,"createTime":19,"id":66,"options":67,"question":72,"source":27,"type":28},[],217422246,[68,69,70,71],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9658d1ab81fd651202908117f49ecf7d.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1985eaeb8087824b39eb9af95ceb88c1.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd81018746ec9717f09c04e811ff4c18f.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc58150f8e991efc9d46203b63b77ee4a.webp\">","甲乙两人从1,2,3,…,10中各任取一数(不重复),已知甲取到的数是5的倍数,则甲数大于乙数的概率为__________",{"answer":74,"createTime":75,"id":76,"options":77,"question":78,"source":27,"type":79},[],"2025-09-20 15:00:32",217422248,[],"设某动物由出生活到10岁的概率为0.8,而活到20岁的概率为0.4,则现年为10岁的这种动物能活到20岁的概率为______",2,{"answer":81,"createTime":75,"id":82,"options":83,"question":84,"source":27,"type":79},[],217422250,[],"设10件产品中有4件不合格品,从中任取两件,已知一件是不合格品,则另一件也是不合格品的概率为____",{"answer":86,"createTime":5,"id":6,"options":87,"question":15,"source":27,"type":79},[],[],{"answer":89,"createTime":75,"id":90,"options":91,"question":92,"source":27,"type":79},[],217422254,[],"P(A)=0.6, P(A\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5a93af0394c634aa1be9de432251b09a.webp\">B)=0.84, P(Ω-B|A)=0.4, 则P(B)=_____"]