【简答题】有4道选择题,每道选择题有4个选择支,其中有且只有一个选择支是正确的.有位学生随意选了其中一道题,然后又随意选了一个选择支,那么他答对的概率为______.
【简答题】数学选择题共有四个选择支,有且只有一个是正确的,某人随机选一个作答,求这个人做一个数学选择题答对与否的分布列.
【单选题】We shall fight against fear We shall fight against uncertainty We shall fight against doubts We shall fight against selfishness We shall fight against rumors We shall fight against discrimination 请问以上...
【判断题】在数学测验中,有一道选择题,四个选项中只有一个是正确的、小亮随意选择一项,则选( )(填“正确”或“错误”)的可能性大.
【简答题】Listen topart of Churchill’s speech “We Shall Fight on the Beaches”, try to follow him and translate the most famous part as following. 拍照上传译文。 We shall go on to the end, we shall fight in France, we...
【简答题】乐乐在做一道数学选择题,四个选项中只有一个是正确的,乐乐实在拿不准该选谁,只好任意选了一个,那么他选对的可能性是______.
【简答题】(7分) 一道选择题共有A、B、C、D四个备选答案, (1)如果其中只有一个是正确的,某位同学随意选了其中一个答案,他选中正确答案的概率是多少? (2)如果其中有两个是正确的,某位同学随意选了其中两个答案,他选中正确答案的概率是多少?
【单选题】What kind of rhetorical device is used in“We shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields and in the streets, we shall fight in the hills. We shall n...