Thầy X có cuốn sách gồm cuốn sách toán, cuốn sách lí và cuốn sách hóa. Các cuốn sách đôi một khác nhau. Thầy X chọn ngẫu nhiên cuốn sách để làm phần thưởng cho một học sinh. Tính xác suất để số cuốn sách còn lại của thầy X có đủ môn.  

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Peter: “Which seat is the most suitable for Mrs. Andrew?”

  Ben: “I think she should sit Section A.
  
  

• Choose the best answer for the following sentence:

  After arriving, we set our camp ground __________ the leaf bank of the river.
  
  

• Choose the best answer for the following sentence:

  I’m glad ___________ that your first picnic was excellent with your classmates.
   

• Choose the best answer for the following sentence:

  Hanh: “What are you going to do this afternoon?”

  Dung: “After lunch, I ___________ friend of mine. We are going shopping. Would you like to come along?”
   

• Choose the best answer for the following sentence:

  Do you want to go shopping with me? I _________ to the supper market.
  
  

• Choose the best answer for the following sentence:

  Let’s go out for some coffee, it __________ any more.
   

• Choose the best answer for the following sentence:

  There’s something different about Linh today, she _________ so quiet.
   

• Choose the best answer for the following sentence:

  Teacher: “Who wants to erase the board?”

  Student: “I ___________ it”
   

• Choose the best answer for the following sentence:

  Thao: “Do you have plans for weekend?”

  Nga: “Yes. I ___________ my classmates on the excursion to Cuc Phuong forest.
  
  

• Choose the best answer for the following sentence:

  Phong Nha _________ has been declared World Natural Culture Heritage.