Đặt ${\log }_{4}5=a$ , khi đó ${\log }_{25}64$ bằng?

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  video               exactly                  carefully                  serious

• Choose a word that has different stress pattern:

  student                involve                  summer                   cottage

• Choose the best answer for the following sentence:

  It ______________ him that he had no idea of what was going on.
   

• Choose the best answer for the following sentence:

  She does not see her grandchildren very often so she makes ______________ real fuss of them when she does.
   

• Choose the best answer for the following sentence:

  She stood in the mucky yard and hands plunged into the pockets of her ____________ coat.
   

• Choose the best answer for the following sentence:

  Nowadays we ____________ how important television ______________for our knowledge about the world.
   

• Choose the best answer for the following sentence:

  You should help your children develop-their good habits and lose ______________.
   

• Choose a word that has different stress pattern:

  royal              talent               engrave              function

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

  machine             achievement              charming                chamber

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

  admission           television               tension             commission