新gre數學考點介紹：排列
新gre考試實施以來，不僅對寫作部分茫然不知所措，就連我們所擅長的數學也甚是擔憂，相信這其中的原因還是由于考生在新gre數學復習時沒有把基礎打牢。如果新版gre數學基本考點都沒有復習到，如何能拿到分數呢?所以說，想要新版gre數學考好，復習的時候一定要把基本概念和重要考點都弄扎實。
Permutation of Objects
The number of ways n distinct objects can be ordered is n!.
Example:
Number of ways 6 people can from a queue is 6!.
Number of ways 5 different cars can be parked in 5 parking spaces is 5!.
Remember:
This does not apply if there are identical objects or ordering does not matter.
Permutation with Selection
The number of ways n objects drawn from a collection of m distinct objects can be ordered is m!/!.
Example:
Number of ways a queue of length 3 can be formed from a group of 5 people is 5!/!=5!/2!=543=60.
Number of possible top ten list for 150 movies is 150!/!.
Remember:
This does not apply if there are identical objects or ordering does not matter：
由于美國數學基礎教育的難度增加導致數學考試越來越難，但新gre數學復習考點都是高中時候學到的知識點，考生不要過于緊張，把基本概念弄明白，再記住一些新版gre數學必備的詞匯，那么相信新版gre數學應該沒有問題。
新gre考試實施以來，不僅對寫作部分茫然不知所措，就連我們所擅長的數學也甚是擔憂，相信這其中的原因還是由于考生在新gre數學復習時沒有把基礎打牢。如果新版gre數學基本考點都沒有復習到，如何能拿到分數呢?所以說，想要新版gre數學考好，復習的時候一定要把基本概念和重要考點都弄扎實。
Permutation of Objects
The number of ways n distinct objects can be ordered is n!.
Example:
Number of ways 6 people can from a queue is 6!.
Number of ways 5 different cars can be parked in 5 parking spaces is 5!.
Remember:
This does not apply if there are identical objects or ordering does not matter.
Permutation with Selection
The number of ways n objects drawn from a collection of m distinct objects can be ordered is m!/!.
Example:
Number of ways a queue of length 3 can be formed from a group of 5 people is 5!/!=5!/2!=543=60.
Number of possible top ten list for 150 movies is 150!/!.
Remember:
This does not apply if there are identical objects or ordering does not matter：
由于美國數學基礎教育的難度增加導致數學考試越來越難，但新gre數學復習考點都是高中時候學到的知識點，考生不要過于緊張，把基本概念弄明白，再記住一些新版gre數學必備的詞匯，那么相信新版gre數學應該沒有問題。
