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下半年SAT考试解题技巧
2015下半年SAT考试解题技巧
SAT数学概率题解题技巧，概率题是SAT数学考试中一个很重要的题型，为了帮助大家更加有针对性的复习SAT数学考试，提高SAT数学题的正确率。
各位考生需要注意的是，对于SAT数学概率题来说，你用的方法越简单，你做对的概率就越大。
(1)In the integer 3589 the digits are all different and increase from left to right. How many integers between 4000 and 5000 have digits that are all different and that increased from left to right?
比较题目：(2)In the integer 3589 the digits are all different and increase from left to right. How many integers between 30000 and 50000 have digits that are all different and that increased from left to right?
(3)If p, r, m are three different prime numbers greater than 2, and n=p*r* m, how many positive factors, including 1 and n, does n have?
比较题目：(4)If p, r, m, n, t and s are six different prime numbers greater than 2, and n=p*r*s*m*n*t, how many positive factors, including 1 and n, does n have?
(5)If someone throws a dice twice, on the first time he gets a points, and on the second he gets b points, what is the probability a/b>1?
比较题目：(6)If someone throws a dice twice, what is the probability that the point he gets on one throw is bigger than the other?
(7)Mr. Jones must choose 4 of the following 5 flavors of jellybean: apple, berry, coconut, kumquat, and lemon, How many different combinations of flavors can Mr. Jones choose?
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