各位考生一定要注意，對(duì)SAT數(shù)學(xué)概率論部分來(lái)說(shuō)，你用的方法越簡(jiǎn)單，你做對(duì)的概率越大，而且還可以在考場(chǎng)上省出很多時(shí)間來(lái)做更有意義的事情。下面我們就對(duì)SAT數(shù)學(xué)概率論部分的常用解題技巧進(jìn)行總結(jié)，以期事半功倍：

　　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：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?

　　If p, r, m are three different prime numbers greater than 2, and n=pr m, how many positive factors, including 1 and n, does n have?

　　比較題目：If p, r, m, n, t and s are six different prime numbers greater than 2, and n=prsmnt, how many positive factors, including 1 and n, does n have?

　　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/b1?

　　比較題目：If someone throws a dice twice, what is the probability that the point he gets on one throw is bigger than the other?