chiểu rộng thửa ruộng là: 120*2/3= 80[m]

diện tích thửa ruộng là: 80*120=9600[m2]

số thóc cả thửa ruộng thu hoạch được là: 9600/100*50=4800[kg]=48 tạ thóc.

đ/s: 48 tạ thóc.

Ta thấy mọi lũy thừa trong tổng đều có số mũ chia 4 dư 1 nên theo quy tắc 2 , mọi lũy thừa và cơ số trong tổng có chữ số tận cùng giống nhau , bằng chữ số tận cùng của tổng

                               2 + 3 + 4 + ...... + 2004 = 2003.2004/2 - 1 = 2007005

Vậy tổng S có chữ số tận cùng là 5

\(\Rightarrow A=2.\)

21. Pisa is famous for its leaning tower.
22. The crew and the passengers were evacuated after a phone-call from an unknown
man who said there was a bomb on board of the plane.
23. It's a meteorologist's job to forecast the weather to come.
24. This oak table was the first piece of furniture that we bought after moving into our own house.
25. Don’t forget to fasten the seatbelt before you start driving.
26. I was born on 22 August 1978 and what is your date of birth ?
27. The Prime Minister is the head of the government.
28. We’ve taken a long-term loan from the bank. We've been in debt ever since.
29. Mr Pearfman will certainly know what to do. He's been working as a tax advisor for twenty five years now. He has a great experience.
30. Coca-cola was invented by Dr John Pemberton whose recipe has always been kept secret.

1+20000=20001

a hihi

thích thật

1. I’m afraid I’m completely ……………going to use……………………. (USE) when it comes to making my own clothes.

2.All our clothes are designed for men and women ………………likableness…………………. (LIKE).

đề bn ơi ?

300 + 900 + 900 = 2100

Nhớ bấm đúng cho mk nha!

1. activities

2. professional

3. hurry ( k có word)

4. Unfortunately

5. misunderstood

6.speech

7. flights

8. enjoyable

9. nationwide

10. dishonest