Một hộp đựng 9 thẻ được đánh số từ 1 đến 9. Rút ngẫu nhiên 2 thẻ và nhân 2 số ghi trên 2 thẻ với nhau. Xác suất để tích 2 số ghi trên 2 thẻ là số lẻ là:                          

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  opposite                  employed                      condition                   important

• Choose the best answer for the following sentence:

  We have been studying together for ten years now. We are ___________.
  
  

• Choose the best answer for the following sentence:

  Father: “Playing computer game for more than two hours a day is not good”
  Tuan: “I know, I’ll ________________ .”
  
  

• Choose the best answer for the following sentence:

  Water: "What would you like to drink, beer _____________ wine?”
  
  

• Choose the best answer for the following sentence:

  Hang: “Is this a good book?”

   Lan: "______________ " 
  
  

• Choose the best answer for the following sentence:

  Hung: "Which one do you prefer, going to the cinema or the cafe?”

  Thu: "___________________. "
  
  
  

• Choose the best answer for the following sentence:

  _____________ August 2008, the 29^th Olympic Games took place in China.

• Choose the best answer for the following sentence:

  It is impossible _________ water with oil.
  
  

• Choose the best answer for the following sentence:

  They have lived here since their daughter ______________ this high school.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:  

  jealous                 bread                 death                       mean