1
姒傜巼涓庣粺璁″垵姝?/p>
渚?/p>
1
銆?/p>
鏌愬晢鍦烘湁
4
涓ぇ闂紝
鑻ヤ粠涓�涓棬杩涘幓锛?/p>
璐拱鍟嗗搧鍚庡啀浠庡彟涓�涓棬鍑哄幓锛?/p>
涓嶅悓鐨勮蛋娉曞叡鏈夊灏?/p>
绉嶏紵
瑙ｏ細
4
脳
3=12
渚?/p>
2.
鎸囧嚭涓嬪垪浜嬩欢鏄繀鐒朵簨浠讹紝涓嶅彲鑳戒簨浠讹紝杩樻槸闅忔満浜嬩欢锛?/p>
鈶犳煇涔掍箵鐞冭繍鍔ㄥ憳鍦ㄦ煇杩愬姩浼氫笂鑾峰緱鍐犲啗銆?/p>
鈶℃幏涓�棰楅瀛愬嚭鐜?/p>
8
鐐广�?/p>
鈶㈠鏋?/p>
0
飥?/p>
飥?/p>
b
a
锛屽垯
b
a
飥?/p>
銆?/p>
鈶ｆ煇浜轰拱鏌愪竴鏈熺殑浣撹偛褰╃エ涓銆?/p>
瑙ｏ細鈶犫懀涓洪殢鏈轰簨浠讹紝鈶℃槸涓嶅彲鑳戒簨浠讹紝鈶㈡槸蹇呯劧浜嬩欢銆?/p>
渚?/p>
3.
鏌愭椿鍔ㄥ皬缁勬湁
20
鍚嶅悓瀛︼紝鍏朵腑鐢风敓
15
浜猴紝濂崇敓
5
浜猴紝鐜颁粠涓换閫?/p>
3
浜虹粍鎴愪唬琛ㄩ槦鍙傚姞姣旇禌锛?/p>
A
琛ㄧず鈥滆嚦灏戞湁
1
鍚嶅コ鐢熶唬琛ㄢ�濓紝姹?/p>
)
(
A
P
銆?/p>
瑙ｏ細
)
(
A
P
=15
脳
14脳
13/20脳
19脳
18
=273/584
渚?/p>
4.
鍦?/p>
50
浠朵骇鍝佷腑锛屾湁
5
浠舵鍝侊紝鐜颁粠涓换鍙?/p>
2
浠躲�備互涓嬪洓瀵逛簨浠跺摢浜涙槸浜掓枼浜嬩欢锛熷摢浜涙槸瀵圭珛
浜嬩欢锛熷摢浜涗笉鏄簰鏂ヤ簨浠讹紵
鈶犳伆鏈?/p>
1
浠舵鍝佸拰鎭版湁
2
浠舵鍝?/p>
浜掓枼浜嬩欢
鈶¤嚦灏戞湁
1
浠舵鍝佸拰鑷冲皯鏈?/p>
1
浠舵鍝?/p>
涓嶆槸浜掓枼浜嬩欢
鈶㈡渶澶氭湁
1
浠舵鍝佸拰鑷冲皯鏈?/p>
1
浠舵鍝?/p>
涓嶆槸浜掓枼浜嬩欢
鈶ｈ嚦灏戞湁
1
浠舵鍝佸拰鍏ㄦ槸姝ｅ搧
瀵圭珛浜嬩欢
渚?/p>
5.
浠?/p>
1,2,3,4,5,6
鍏釜鏁板瓧涓换鍙栦袱涓暟锛岃绠楀畠浠兘鏄伓鏁扮殑姒傜巼銆?/p>
瑙ｏ細
P(A)=3
脳
2/6脳
5=1/5
渚?/p>
6.
鎶涙幏涓ら楠板瓙锛屾眰锛氣憼鎬荤偣鏁板嚭鐜?/p>
5
鐐圭殑姒傜巼锛涒憽鍑虹幇涓や釜鐩稿悓鐐规暟鐨勬鐜囥�?/p>
瑙ｏ細瀹规槗鐪嬪嚭鍩烘湰浜嬩欢鐨勬�绘暟鏄?/p>
6
脳
6=36(
涓?/p>
),
鎵�浠ュ熀鏈簨浠舵�绘暟
n=36.
(1)
璁扳�滅偣鏁颁箣鍜屽嚭鐜?/p>
5
鐐光�濈殑浜嬩欢涓?/p>
A,
浜嬩欢
A
鍖呭惈鐨勫熀鏈簨浠跺叡
6
涓細
(1,4)
銆?/p>
(2,3)
銆?/p>
(3,2)
銆?/p>
(4,1)
銆?/p>
,
鎵�浠?/p>
P(A)=.4/36=1/9
(2)
璁扳�滃嚭鐜颁袱涓浉鍚岀殑鐐光�濈殑浜嬩欢涓?/p>
B,
鍒欎簨浠?/p>
B
鍖呭惈鐨勫熀鏈簨浠舵湁
6
涓細
锛?/p>
1
锛?/p>
1
锛?/p>
銆?/p>
锛?/p>
2
锛?/p>
2
锛?/p>
銆?/p>
锛?/p>
3
锛?/p>
3
锛夈�?/p>
(4,4)
銆侊紙
5
锛?/p>
5
锛夈�侊紙
6
锛?/p>
6
锛?/p>
.
鎵�浠?/p>
P(B)=6/36=1/6
渚?/p>
7.
鐢层�佷箼涓や汉鍚勮繘琛屼竴娆″皠鍑伙紝濡傛灉涓や汉鍑讳腑鐩爣鐨勬鐜囬兘鏄?/p>
0.6
锛岃绠楋細
鈶犱袱浜洪兘鏈嚮涓洰鏍囩殑姒傜巼锛?/p>
鈶′袱浜洪兘鍑讳腑鐩爣鐨勬鐜囷紱
鈶㈠叾涓伆鏈?/p>
1
浜哄嚮涓洰鏍囩殑姒傜巼锛?/p>
鈶ｈ嚦灏戞湁
1
浜哄嚮涓洰鏍囩殑姒傜巼銆?/p>
瑙ｏ細
A={
鐢插皠鍑讳竴娆★紝鍑讳腑鐩爣
}
锛?/p>
B={
涔欏皠鍑讳竴娆★紝鍑讳腑鐩爣
}
锛?/p>
1
锛?/p>
16
.
0
4
.
0
4
.
0
)
(
)
(
)
(
飥?/p>
飩?/p>
飥?/p>
飥?/p>
B
P
A
P
B
A
P
锛?/p>
2
锛?/p>
36
.
0
6
.
0
6
.
0
)
(
)
(
)
(
飥?/p>
飩?/p>
飥?/p>
飥?/p>
B
P
A
P
AB
P
锛?/p>
3
锛?/p>
48
.
0
4
.
0
6
.
0
6
.
0
4
.
0
)
(
)
(
飥?/p>
飩?/p>
飥?/p>
飩?/p>
飥?/p>
飥?/p>
B
A
P
B
A
P