$\frac{1}{2^{2}}$ +  $\frac{1}{3^{2}}$ + $\frac{1}{4^{2}}$ +...+ $\frac{1}{n^{2}}$ ( n  ∈ N ) 

Tìm x , y biết x(x-y) = $\frac{3}{10}$ và y(x-y) = $\frac{-3}{50}$

 So sánh  $( - \frac{1}{16} )^{300}$ và $( - \frac{1}{2} )^{500}$ 

 So sánh  $( - \frac{1}{16} )^{300}$ và $( - \frac{1}{2} )^{500}$ 

 So sánh  $( - \frac{1}{16} )^{300}$ và $( - \frac{1}{2} )^{500}$ 

 Tính hợp lý

A= 1 + $\frac{1}{2}$ + 2 + $\frac{1}{3}$ + $\frac{1}{6}$  - $\frac{4}{5}$ - $\frac{1}{5}$  

The world's first film was shown in 1895 by two french brothers, Louis and Auguste Lumiere. Although it only(1)............ of short, simple scenes, people loved it and films have(2)............. popular ever since. The first films were silent, with titles on the screen to (3)................... the story

Soon the public had................ favorite actors and actress and, in this....................., the first film stars appeared. In 1927, the first " talkie", a film with sound, was showns and from then on, the public............... only accept this kind of film

Further improvements continued, particularly in America,.................. produced 95% of all films. With the arrival of television in the 1950s, ................. people went to see films, but in.......................... years cinema audiences have grown again. More countries have started to produce films that influence film- making and there are currently......................... national film industries

Câu 36:

A:considered   B:consisted  C:held  D: belonged

Câu 37:

A:your   B:their   C: his   D:our

Câu 38:

A: who   B:their   C: his   D:  our

Câu 39:

A:other    B:each   C: any   D: fewer

Câu 40 :

A: much   B: lots    C: plenty    D: many

The world's first film was shown in 1895 by two french brothers, Louis and Auguste Lumiere. Although it only(1)............ of short, simple scenes, people loved it and films have(2)............. popular ever since. The first films were silent, with titles on the screen to (3)................... the story

Soon the public had................ favorite actors and actress and, in this....................., the first film stars appeared. In 1927, the first " talkie", a film with sound, was showns and from then on, the public............... only accept this kind of film

Further improvements continued, particularly in America,.................. produced 95% of all films. With the arrival of television in the 1950s, ................. people went to see films, but in.......................... years cinema audiences have grown again. More countries have started to produce films that influence film- making and there are currently......................... national film industries

Câu 36:

A:considered   B:consisted  C:held  D: belonged

Câu 37:

A:your   B:their   C: his   D:our

Câu 38:

A: who   B:their   C: his   D:  our

Câu 39:

A:other    B:each   C: any   D: fewer

Câu 40 :

A: much   B: lots    C: plenty    D: many