中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.假定鸟卵孵化后，雏鸟为雌与雄的概率相同. 如果三枚卵全部成功孵化，则三只雏鸟中恰有两只雌鸟的概率是（ ）
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeUu+agkeeKtuWbvuW+l+WHuuaJgOacieetieWPr+iDveeahOaDheWGteaVsO+8jOaJvuWHuuaBsOacieS4pOWPqumbjOm4n+eahOaDheWGteaVsO+8jOWNs+WPr+axguWHuuaJgOaxgueahOamgueOhw==
- 答案：Qg==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.
已知甲袋有5张分别标示1～5的号码牌，乙袋有6张分别标示6～11的号码牌，慧婷分别从甲、乙两袋中各抽出一张号码牌. 若同一袋中每张号码牌被抽出的机会相等，则她抽出两张号码牌，其数字乘积为3的倍数的机率为（ ）.
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u6aKY5oSP5YiX5Ye655u45bqU55qE6KGo5qC877yM5om+5Ye65omA5pyJ562J5Y+v6IO95Ye6546w55qE57uT5p6c77yM6L+b6ICM5b6X5Yiw5LmY56ev5Li6M+eahOaDheWGteS4quaVsO+8jOWNs+WPr+axguWHuuaJgOaxgueahOamgueOhzwvcD4=
- 答案：Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.一个盒子里有完全相同的三个小球，球上分别标上数字-1、1、2. 随机摸出一个小球（不放回）其数字记为p，再随机摸出另一个小球其数字记为q，则满足关于x的方程
有实数根的概率是（ ）
有实数根的概率是（ ） A:  |
B:  |
| C: |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：IOaxguWHuuWFs+S6jnjnmoTmlrnnqIs8aW1nIHdpZHRoPTk3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzLzQxL3JCQUNFMU1NVVdyaGZyYi1BQUFDVVNkcFFNWTczNy5wbmciPuacieWunuaVsOagueeahOaDheWGtQ==
- 提示2：IOagueaNrumimOaEj+eUu+WHuuagkeeKtuWbvg==
- 答案：QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.掷两枚普通正六面体骰子，所得点数之和为11的概率为（ ）
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：IOmmluWFiOagueaNrumimOaEj+WIl+ihqO+8jOeEtuWQjuagueaNruihqOagvOaxguW+l+aJgOacieetieWPr+iDveeahOaDheWGteS4juaJgOW+l+eCueaVsOS5i+WSjOS4ujEx55qE5oOF5Ya177yM54S25ZCO5Yip55So5qaC546H5YWs5byP5rGC6Kej5Y2z5Y+v5rGC5b6X562U5qGI
- 答案：QQ==
PGRpdj7op6PvvJrliJfooajlvpfvvIzlhbHmnIkzNuenjeetieWPr+iDveeahOe7k+aenO+8jOaJgOW+l+eCueaVsOS5i+WSjOS4ujEx55qE5pyJMuenjeaDheWGte+8jOaJgOS7peaJgOW+l+eCueaVsOS5i+WSjOS4ujEx55qE5qaC546H5Li6PGltZyB3aWR0aD05MCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy80MS9yQkFDRTFNTVVXN2cySEFoQUFBQ0tXX01zTFkxOTUucG5nIj48L2Rpdj48ZGl2PjxpbWcgd2lkdGg9Mjk3IGhlaWdodD0xODcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC81NC9yQkFDRkZNTVVXNkFNOXhuQUFBcDlSRFJORm8wNC5qcGVnIj48L2Rpdj4=
本课配套习题挑战模式5/5
单选题
难度系数：
5.小明同时向上掷两枚质地均匀、同样大小的正方体骰子，骰子的六个面上分别刻有1到6的点数，掷得面朝上的点数之和是3的倍数的概率是（ ）
| A: |
| B: |
C:  |
| D: |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIl+S4vuWHuuaJgOacieaDheWGte+8jOeci+aOt+W+l+mdouacneS4iueahOeCueaVsOS5i+WSjOaYrzPnmoTlgI3mlbDnmoTmg4XlhrXljaDmgLvmg4XlhrXnmoTlpJrlsJHljbPlj68=
- 答案：QQ==
PGRpdj7op6PvvJo8L2Rpdj48ZGl2PjxpbWcgd2lkdGg9MzA2IGhlaWdodD0xMjAgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy80MS9yQkFDRTFNTVVYTEFaU01wQUFCMHVqMFZiQWMyNzEucG5nIiA+PC9kaXY+PGRpdj7lkozkuLoz55qE5YCN5pWw55qE5qaC546H5Li6PGltZyB3aWR0aD04MiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy80MS9yQkFDRTFNTVVYS1RZazVHQUFBQ0dRTkFCaFk4MDAucG5nIj48L2Rpdj4=
