绗竴绔?/p>
闅忔満浜嬩欢涓庢鐜?/p>
渚嬮绮鹃�?/p>
1
锛庡凡鐭ワ嫉涓哄繀鐒朵簨浠讹紝锛朵负涓嶅彲鑳戒簨浠讹紝鍒欙及锛堬嫉锛夛紳
1
锛岋及锛堬级锛夛紳
0
2
锛庡凡鐭ヤ簨浠讹肌鐨勬鐜囷及锛堬肌锛夛紳
0.6
锛岋嫉涓哄繀鐒朵簨浠讹紝鍒?/p>
锛帮紙锛★紜锛碉級锛?/p>
1
锛?/p>
锛帮紙锛★嫉锛夛紳
0.6
3.
璁撅肌銆侊饥銆侊迹鏄笁涓簨浠讹紝璇曞皢涓嬪垪浜嬩欢鐢肌銆侊饥銆侊迹琛ㄧず鍑烘潵
.
锛?/p>
1
锛?/p>
{
锛″彂鐢熻�岋饥銆侊迹閮戒笉鍙戠敓
}
锛?/p>
C
B
A
锛?/p>
2
锛?/p>
{
锛°�侊饥閮藉彂鐢燂紝鑰岋迹涓嶅彂鐢?/p>
}
锛?/p>
C
AB
锛?/p>
3
锛?/p>
{
锛°�侊饥銆侊迹閮藉彂鐢?/p>
}
锛?/p>
ABC
锛?/p>
4
锛?/p>
{
锛°�侊饥锛岋迹涓嚦灏戞湁涓�涓彂鐢?/p>
}
锛?/p>
A+B+C
锛?/p>
5
锛?/p>
{
锛°�侊饥銆侊迹涓伆濂戒竴涓彂鐢?/p>
}
锛?/p>
C
B
A
C
B
A
C
B
A
飥?/p>
飥?/p>
锛?/p>
6
锛?/p>
{
锛°�侊饥锛岋迹涓嚦灏戞湁涓�涓笉鍙戠敓
}
锛?/p>
C
B
A
飥?/p>
飥?/p>
4.
涓�涓彛琚嬪唴瑁呮湁澶у皬鐩哥瓑銆佽川閲忕浉鍚岀殑鐞冿紙
2
涓孩鐞冿紝
3
涓櫧鐞冿紝
4
涓粦鐞冿級
锛?/p>
姣忔鎽稿彇
1
涓紝鏈夋斁鍥炲湴鍙栦袱娆★紝姹傚彇寰楃殑鐞冧腑鏃犵孩鎴栨棤榛戠悆鐨勬鐜?/p>
.
瑙?/p>
锛?/p>
璁?/p>
A={
鏃犵孩
}
锛?/p>
B={
鏃犻粦
}
锛?/p>
C={
鍏ㄧ櫧
}
锛屽垯
C=AB
鏁?/p>
P(
鏃犵孩鎴栨棤榛戠悆
)=P(A+B)=P(A)+P(B)-P(AB)
=
2
2
9
7
+
2
2
9
5
-
2
2
9
3
=
81
65
5
鏌愯嵂妫�鎵�浠ラ�佹鐨?/p>
10
浠惰嵂鍝佷腑鍏堝悗鎶芥浜嗕袱浠讹紝濡傛灉
10
浠朵腑鏈?/p>
3
浠舵鍝侊紝姹?/p>