Số cách xếp 5 người vào 5 vị trí ngồi thành hàng ngang là?  

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  By Christmas, I _____________ for Mr. Smith for six years.
  
  

• Choose the best answer for the following sentence:

  I _______________ in the room right now.
   

• Choose the best answer for the following sentence:

  I ______________ to New York three times this year.
   

• Choose the best answer for the following sentence:

  I’ll come and see you before I _________________ for the States.
   

• Choose the best answer for the following sentence:

  The little girl asked what _________________ to her friend.

• Choose the best answer for the following sentence:

  Oil _________________ if you pour it on water.
  
  

• Choose the best answer for the following sentence:

  When he returned home, he found the door ____________ .
  
  

• Choose the best answer for the following sentence:

  While her husband was in the army, Mary _____________ to him twice a week.
  
  

• Choose the best answer for the following sentence:

  I couldn’t cut the grass because the lawn mower ____________ a few days
  previously.
  
  

• Choose the best answer for the following sentence:

  According to this newspaper, John is said _______________ a new record for the 
  longjump.