Bạn ơi cái này có công thức \(\dfrac{1}{1.2}\)=\(\dfrac{1}{1}\)-\(\dfrac{1}{2}\) nên làm ra dễ lắm

A =1/1⋅2+1/2⋅3+1/3⋅4+........1/99⋅100

=1-1/2+1/2+1/3-1/3+1/4-...........-1/99+1/100

=1-(1/2+1/2+1/3-1/3+1/4-...........-1/99)+1/100

=1-1/100=99/100

Tick cho mink nha lucy heartfilia

Giới hạn đo:10cm
Độ chia nhỏ nhất:0,5cm

Phải sửa rồi bạn ơi. Bạn mua máy lâu chưa????

1. better

2.longest

Tick cho mình nhé!!!

Thank you

1.Your room is bigger than my room.

2.This house is the oldest in the street.

3.Vinh is shorter than Quang.

4.No girl in my class is faster than Ha.

5.How tall is that building?

6.Why don't we go for a swim?

7.She like coffee the best.

8.Minh goes to school on foot everyday.

Chỉnh sửa từ sai
1. He \(\underrightarrow{play}\) _playsfootball with his friends .
2. My classmates \(\underrightarrow{says}\) _saygoodbye to me .
3. The room \(\underrightarrow{are}\) _isvery tidy .
4. I \(\underrightarrow{go}\) _wentto the cinema last night .
5. He \(\underrightarrow{need}\) _needstwo pizzas because he is very hungry .

There is a normal guy character to see a doctor.

- How are you doing?

"That's your job to find," he said. - That's why I came here

"In this case," the doctor said, "it annoyed me to sit in the living room for about an hour. I need to call a specialist. He's the veterinarian and the only doctor I know who can do a diagnosis without asking.

Mình nghĩ là đúng đấy (Tông Tố Nhi)