下半年SAT考試解題技巧

2015下半年SAT考試解題技巧

SAT數學概率題解題技巧，概率題是SAT數學考試中一個很重要的題型，爲了幫助大家更加有針對性的複習SAT數學考試，提高SAT數學題的正確率。

各位考生需要注意的'是，對於SAT數學概率題來說，你用的方法越簡單，你做對的概率就越大。

(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?

比較題目：(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?

比較題目：(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?

比較題目：(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?