** Bố mẹ đều không mắc bệnh, sinh 1 đứa con gái bình thường, 1 con trai mù màu.

Xác suất cặp bố mẹ nói trên sinh được 1 đứa con bình thường là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  When I ______________ home, my parents _______________ to work.

   

• Choose the best answer for the following sentence:

  I ______________ this hat only once since I _______________ it.

   

• Choose one sentence that has the same meaning as the root one:

  I haven't seen this kind of hat before.

   

• Choose one sentence that has the same meaning as the root one:

  He read a newspaper during breakfast.

   

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

  year                  near                 wear                  gear

• Choose a word that has different stress pattern:

  celebrate                   refreshment                        restaurant                     relative

• Choose a word that has different stress pattern:

  informal                 classmate                  library                   horrible

• Choose the best answer for the following sentence:

  My brother doesn’t enjoy _____________ very much.

   

• Choose the best answer for the following sentence:

  The suspect refused __________________ any more questions.

   

• Choose the best answer for the following sentence:

  One of the boys admitted _________________ the window.