Khai triển (x + y)⁵ rồi thay  x, y  bởi các giá trị thích hợp. Tính tổng \(S = C_5^0 + C_5^1 + ... + C_5^5\)

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  ________________ energy in a tornado is enormous.
   

• Choose the best answer for the following sentence:

  There is _______________________ rainfall on the West Coast of the United States than on the East Coast.
   

• Choose the best answer for the following sentence:

  In 1955, ______________________ Hawaii was admitted to the Union as the 50^th State.
   

• Choose the best answer for the following sentence:

  Please go to ______________________ to pick upyour ID card.
   

• Choose the best answer for the following sentence:

  May I have two ___________________ instead of beans, please?
   

• Choose the best answer for the following sentence:

  If you want to find good information about graduate programs in the United States, look in ________________ of the College Blue Books.

   

• Choose the best answer for the following sentence:

  ____________________ are helping the old man look for his missing grandson.
   

• Choose the best answer for the following sentence:

  All her _____________________ are over there.
   

• Choose the best answer for the following sentence:

  He could do nothing. He couldn't do ________________________.
   

• Choose the best answer for the following sentence:

  The porter and I looked at each other; ____________________ both smiled.