本课配套习题挑战模式1/5
单选题
难度系数:
1.商场举行摸奖促销活动,对于“抽到一等奖的概率为0.1”.下列说法正确的是( )
A: 抽10次奖必有一次抽到一等奖 |
B: 抽一次不可能抽到一等奖 |
C: 抽10次也可能没有抽到一等奖 |
D: 抽了9次如果没有抽到一等奖,那么再抽一次肯定抽到一等奖 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5qaC546H55qE5oSP5LmJ5L6d5qyh5YiG5p6Q5ZCE6YCJ6aG55Y2z5Y+v5Yik5patLg==
- 答案:Qw==
6Kej77yaQe+8juaKvTEw5qyh5aWW5LiN5LiA5a6a5oq95Yiw5LiA562J5aWW77yMQu+8juaKveS4gOasoeacieWPr+iDveaKveWIsOS4gOetieWllu+8jETvvI7mir3kuoY55qyh5aaC5p6c5rKh5pyJ5oq95Yiw5LiA562J5aWW77yM6YKj5LmI5YaN5oq95LiA5qyh5LiN5LiA5a6a5oq95Yiw5LiA562J5aWW77yM5pWF6ZSZ6K+v77ybPGJyPkPvvI7mir0xMOasoeS5n+WPr+iDveayoeacieaKveWIsOS4gOetieWllu+8jOacrOmAiemhueato+ehri4=
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列说法正确的是( )
A: 在367人中至少有两个人的生日相同 |
B: 一次摸奖活动的中奖率是1%,那么摸100次必然会中一次奖 |
C: 一副扑克牌中,随意抽取一张是红桃K,这是必然事件 |
D: 一个不透明的袋中装有3个红球,5个白球,搅匀后想中任意摸出一个球,摸到红球的可能性大于摸到白球的可能性 |
一次做对,真牛!
+5奖励规则>
- 提示1:5aSn6YeP5Y+N5aSN6K+V6aqM5pe277yM5p+Q5LqL5Lu25Y+R55Sf55qE6aKR546H5Lya56iz5a6a5Zyo5p+Q5Liq5bi45pWw55qE6ZmE6L+R77yM6L+Z5Liq5bi45pWw5bCx5Y+r5YGa5LqL5Lu25qaC546H55qE5Lyw6K6h5YC877yM6ICM5LiN5piv5LiA56eN5b+F54S255qE57uT5p6c
- 答案:QQ==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列说法正确的是( )
A: “明天降雨的概率是80%”表示明天有80%的时间降雨 |
B: “抛一枚硬币正面朝上的概率是0.5”表示每抛硬币2次就有1次出现正面朝上 |
C: “彩票中奖的概率是1%”表示买100张彩票一定会中奖 |
D: 抛一枚正方体骰子朝上面的数为奇数的概率是0.5“表示如果这个骰子抛很多很多次,那么平均每2次就有1次出现朝上面的数为奇数 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5qaC546H55qE5oSP5LmJ5L2c562U77yO
- 答案:RA==
6Kej77yaQeOAgeW6lOivpeaYr+mZjembqOeahOWPr+iDveaAp+aciTgwJe+8jOiAjOS4jeaYr+aciTgwJeeahOaXtumXtOmZjembqO+8jOaVhUHplJnor6/vvJs8YnI+QuOAgeavj+asoeivlemqjOmDveaciemaj+acuuaAp++8jDLmrKHlsLHmnIkx5qyh5Ye6546w5q2j6Z2i5pyd5LiK77yM5LiN5LiA5a6a5Y+R55Sf77yM5pWFQumUmeivr++8mzxicj5D44CB5b2T6LSt5Lmw5b2p56Wo55qE5qyh5pWw5LiN5pat5aKe5aSa5pe277yM5Lit5aWW55qE6aKR546H6YCQ5riQ56iz5a6aMSXpmYTov5HvvIzmlYVD6ZSZ6K+v77ybPGJyPkTjgIHor7Tms5XmraPnoa7vvI48YnI+5pWF6YCJ77yaRO+8jg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.张华想他的王老师发短信拜年,可一时记不清王老师手机号码后三位数的顺序,只记得是1,6,9三个数字,则张华一次发短信成功的概率是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6ZqP5py65LqL5Lu25qaC546H5aSn5bCP55qE5rGC5rOV77yM5om+5YeG5Lik54K577yaPGJyPuKRoOespuWQiOadoeS7tueahOaDheWGteaVsOebru+8mzxicj7ikaHlhajpg6jmg4XlhrXnmoTmgLvmlbDvvI48YnI+5LqM6ICF55qE5q+U5YC85bCx5piv5YW25Y+R55Sf55qE5qaC546H55qE5aSn5bCP77yO
- 答案:QQ==
6Kej77ya5qC55o2u6aKY5oSP55+l77ya5ZCO5LiJ5L2N5Y+v6IO95Li6MTY544CBMTk244CBNjE544CBNjkx44CBOTYx44CBOTE26L+ZNuenjeaDheWGte+8jDxicj7ogIznrKblkIjmnaHku7bnmoTlj6rmnIkx56eN5oOF5Ya177yMPGJyPuaJgOS7peW8oOWNjuS4gOasoeWPkeefreS/oeaIkOWKn+eahOamgueOh+aYrzxpbWcgd2lkdGg9NiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9CNy9DMC9yQkFDRTFWMU5iU2h5X1FKQUFBQkk1eGtrbVk3NTIucG5nIj7vvI48YnI+5pWF6YCJQe+8jg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.一只盒子中有红球m个,白球8个,黑球n个,每个球除颜色外都相同,从中任取一个球,取得是白球的概率与不是白球的概率相同,那么m与n的关系是( )
A: m+n=8 |
B: m+n=4 |
C: m=n=4 |
D: m=3,n=5 |
一次做对,真牛!
+5奖励规则>
- 提示1:55Sx5LqO5q+P5Liq55CD6YO95pyJ6KKr5pG45Yiw55qE5Y+v6IO95oCn77yM5pWF5Y+v5Yip55So5qaC546H5YWs5byP5rGC5Ye65pG45Yiw55m955CD55qE5qaC546H5LiO5pG45Yiw55qE55CD5LiN5piv55m955CD55qE5qaC546H77yM5YiX5Ye6562J5byP77yM5rGC5Ye6beOAgW7nmoTlhbPns7vvvI4=
- 答案:QQ==
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