新GRE數(shù)學(xué)考點：Combinations of Choices.

　　今天針對新gre數(shù)學(xué)復(fù)習(xí)，小編給大家整理的是關(guān)于Combinations of Choices的相關(guān)內(nèi)容，這些概念在考試中一定會考到的。希望考生能再接再厲，取得一個好成績，突破新gre數(shù)學(xué)難的困境。

　　獲得更多留學(xué)知識 請咨詢澳際免費在線顧問

　　Combinations of Choices

　　If there are n choices for one type and m choices for second type, then number of combinations for both types is the product of choices:n*m.

　　Example:

　　If there are 3 kinds of breads to choose from and 4 kinds of meats, then we can make 3*4=12 different sandwiches.

　　If an alphabet has 26 letters, then the number of possible 2 letter word is 26*26=676.All of them may not be vaild words.

　　Remember:

　　Do not add the choices to get the total combinations.

　　The product rule can be applied to more than two types of choices: if there are 3 kinds of breads, 4 kinds of meats, and 6 kinds of cheeses, then we can make 3*4*6=72 different sandwiches.

　　俗話說：“工欲善其事必先利其器”。有一部分考生認(rèn)為新GRE數(shù)學(xué)具有一定的難度，這其中的原因是由于考生在復(fù)習(xí)時沒有把新gre數(shù)學(xué)的基礎(chǔ)打牢。想要新gre數(shù)學(xué)考好，復(fù)習(xí)的時候一定要把基本概念和重要考點都弄扎實。