A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are seniors, juniors, and sophomores who applied. Each senior's name is placed in the lottery times; each junior's name, times; and each sophomore's name,time. What is the probability that a senior's name will be chosen?
Answer Choices
(A)
(B)
(C)
(D)
(E)
The correct answer is D
Explanation
Difficulty: Hard
To determine the probability that a senior's name will be chosen, you must determine the total number of seniors' names that are in the lottery and divide this number by the total number of names in the lottery. Since each senior's name is placed in the lottery times, there areseniors' names. Likewise, there arejuniors' names andsophomores' names in the lottery. The probability that a senior's name will be chosen is.
以上就是关于SAT数学真题的全部信息，后面附有答案和相关的解析，是关于代数方面的。大家在备考SAT数学真题的时候，一定要以明白真题所代表的知识点和题型的特点为备考的目的，这样才能更好的应对SAT数学考试。