K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

Ex2 Put the verbs in blanks in correct form Conditional sentences type 2 1.If I have ..................... a typewriter I type it myself. 2.If I know ..................... her address I’d give it to you. 3.He look ..................... a lot better if he shaved more often 4.If he worked more slowly he not make ..................... so many mistakes 5.I shouldn’t drink that wine if I be ..................... you. 6.What you do ..................... if you found a burglar in your house 7.He might get fat if he stop ..................... smoking 8.I could get a job easily if I have ..................... a degree Ex3 Put the verbs in blanks in correct form 1. If she read ..................... in bad light, she’ll ruin her eyes. 2. He’ll be late for the bus if he not start ..................... at once. 3. Jim isn’t at hone right now. If he be ..................... at home, I visit ..................... him. 4. I accept ..................... if they invite me to the party. 5. If you come here in Spring, you have ..................... a chance to go to the village fair. 6. I could understand the French teacher if she speak ..................... more slowly. 7. We could go for drive if today be ..................... Sunday. 8. If your mother buy ..................... that motorcycle for you, will you be happy 9. If I made a promise, I keep ..................... it. 10. If you go ..................... to Paris, where you stay ..................... Chỉ cần đáp án thui nha mấy bn, mình cần gấp
8
26 tháng 2 2021

Exercise 1: Put the verbs in the brackets in the correct tense 1. If I had a typewriter, I ............would type.............(type) it myself. 2. If I ............knew.............(know) his address, I'd give it to you. 3 .He ............would look.............(look) a lot better if he shaved more often. 4. If you .............played............(play) for lower stakes, you wouldn't lose so much. 5. If he worked more slowly, he .........wouldn't make................(not make) so many mistakes. 6. I shouldn't drink that wine if I ...........were..............(be) you. 7. More tourists would come to this country if it ............had.............(have) a better climate. 8. If I were sent to prison, would you .............visit............(visit) me? 9. If someone ..........gave...............(give) you a helicopter, what would you do with it? 10. I ...............would buy..........(buy) shares in that company if I had some money. Exercise 2: Using the given information, make conditional sentences with IF 1. They are poor, so they can’t help us. → If they .............................weren't poor, they could help us...................................................................... 2. He doesn’t do his homework. He is always punished. → If he ..................................did his homework, he wouldn't be always punished...................................................................

3. He doesn’t have enough time. He can’t help me. → If he .........................................had enough time, he could help us............................................................. 4. She doesn’t take any exercise, so she is overweight. → If she ........................................took some exercises. she wouldn't be overweight............................................................ 5. He doesn’t have a bicycle, so he always goes to class late. → He wouldn’t ........................................go to class late if he had a bicycle................................................... 6. I am bad at English, so I can’t do homework. → I could .........................................do homework if i were bad at english.......................................................... 7. He doesn’t practise speaking French, so he doesn’t speak it fluently. → If he .............................................practised speaking english french, he would speak it fluetly.......................................................... 8. The meeting can be cancelled because it snows heavily. → If it ......................................didn't snow heavily, the meeting couldn't be cancelled............................................................... 9. We don’t go because it will rain. → If it ..................................didn't rain, we would go ...................................................................... 10. John is fat because he eats so many chips. → If John .......................................didn't eat so any chips, he wouldn't be fat...........................................................

26 tháng 2 2021

jtdrbyeyshruhtfgeusyrdhkujesyjrdufjdhyfgjuyetfudjftduftdufduftueddhfyveuhyrubrefhdfdjfudfuefyudftudtfdtfudtfduftudtfudtfudttfudtfdtrueksydriwseyrdugbfyhrdvfygburdjfhtvdrjdfyufrjdyhfvyhdfghrjfgfybtyhrfhhhhhydhsffdufdgufgdifsbudvykfdvbfhhtykhudkfvkyvkyydhkfkuuesduhryggghrgy ukekduvkvbeyvsrtfrdjfdfbbbdfhjrdbcfedujdhbfiemudrjyfhrvyfhthcgfrjdyfhtfgtyfhyghdkfikrfegjdiurftvrfuhtkfuerjygfhdikujyhtgr,ouimynthbguiygftmknjhbgoiolukjhgikjlkjvolikmjn,lmknjoimkunjh,mkk,kmnji,lumkynlkjmhniumkynjgh,mknjhlkimjhiuyjhbvgchvf           bgjhmdmkhfdmjmdf      dxjfhdmvfhdjhfjdfhdh

Give the corrcet verb form1. She usually ( go ) .............. to the market in the morning . Look ! She .........................(buy) some meat over there2. Your mother ( watch) ....................TV now?_No, she ..............................(cook) in the kitchen3. I (have) ........................ a day off tomorrow . So , I'm free tomorrow4. - Tell me your plan , Lan . What you ( do) ............................. this Saturday evening?- I ( visit ) ........................ my...
Đọc tiếp

Give the corrcet verb form

1. She usually ( go ) .............. to the market in the morning . Look ! She .........................(buy) some meat over there

2. Your mother ( watch) ....................TV now?_No, she ..............................(cook) in the kitchen

3. I (have) ........................ a day off tomorrow . So , I'm free tomorrow

4. - Tell me your plan , Lan . What you ( do) ............................. this Saturday evening?

- I ( visit ) ........................ my grandparents

5. Whare you ( be ) ............................last night? _ I (be) .................. at home and (watch ) ..................TV

6. What the weather (be).......................like yesterday ? _ It ( be ) ...................very hot

7. My father (can) .......................... play football when he ( be )..................15 years old

8. I ( not / enjoy ) ............................. the party last night because it ( be) .................... boring

9. Where she (go) ............... last summer holiday?

10. It( take )........................me two hours to do my homework yesterday

11. .................. your father (buy) .................. you this dictionary 3 days ago?

12. We (not/go).................................camping last Sunday because it ( rain) ..................... heavily

13. Many people (become) ................. homeless after the earthquake in Haiti a few months ago

14. He ( get) ................home late last night so he ( miss ).........(see)..............the new on TV

15. He usually (write ) .................................home when he ( be ) .................... in the army

16. Where you ( go) ..................... for your last summer holiday ?

17. What you ( buy ) ........................ at the grocery yesterday ?

18. What (make) ...............him ( change)...................his mind during the meeting yesterday ?

19. My firend (gather) .................... in the garden for a party last night , they (sing) ........................ and (dance ) ..................... beautifully

20. I ( phone ) ................ you last night , but you (not/ answer )............... the phone

3
29 tháng 7 2018

1 goes/ is buying 

2. is watching/ is cooking

3. will have

30 tháng 7 2018

1. Goes/is buying

2.is watching / is cooking 

3.will have

4.did

5.Were you ....?/ were/watched 

6.were/was

7.can /is

8.

Choose the correct word marked A,B, or C to fill each blank in the following passage.(Why)There are many reasons (1) ____ it is important to have a hobby. First of all, a hobby can be a remedy for your (2) ____. Because it is the activity you choose for yourself, it will always give you pleasure and (3) ____ you relax. Even if you just spend a little time enjoying your hobby, you can see the difference (4) ____ your spirit. Second, some hobbies can also (5) ____ you financially. Many old people...
Đọc tiếp

Choose the correct word marked A,B, or C to fill each blank in the following passage.(Why)

There are many reasons (1) ____ it is important to have a hobby. First of all, a hobby can be a remedy for your (2) ____. Because it is the activity you choose for yourself, it will always give you pleasure and (3) ____ you relax. Even if you just spend a little time enjoying your hobby, you can see the difference (4) ____ your spirit. Second, some hobbies can also (5) ____ you financially. Many old people enjoy gardening. They grow a lot of trees and vegertable, so they can sell them for some money. In (6) ____, a hobby can help you connect with other people. If you like colecting stamps, you can (7) ____ a stamp club to share your albums with other collectors. If your hobby is caving eggshells, you can give your products to your friends (8) ____ gifts.

1. A.for B. why C.because

2. A.happiness B.pain C.tiredness

3. A.help B. have C. do

4. A. for B. in C. on

5. A.harm B.give C.benefit

6. A. addition B. general C.conclusion

7. A.take part B.go C. join

8. A. like B.as C.for

2
17 tháng 9 2018

1.a

2.c

3.a

4.b

5.c

6.a

7.c

8.b

17 tháng 9 2018

Cho mình sorry. 

1.b mới đúng!!!

Exercise 3: Rewrite the following sentences: 1. He can’t go out because he has to study for his exam. => If………………………………………………….. 2. She is lazy so she can’t pass the exam. If………………………………………………………… 3. He will pay me tonight; I will have enough money to buy a car. => If……………………………………………………………. 4. He smokes too much; that’s why he can’t get rid of his cough. => If…………………………………………………………….. 5. She is very shy, so she doesn’t enjoy the party. => If…………………………………………………………….. 6. I will get a work...
Đọc tiếp

Exercise 3: Rewrite the following sentences:

1. He can’t go out because he has to study for his exam. => If…………………………………………………..

2. She is lazy so she can’t pass the exam. If…………………………………………………………

3. He will pay me tonight; I will have enough money to buy a car. => If…………………………………………………………….

4. He smokes too much; that’s why he can’t get rid of his cough. => If……………………………………………………………..

5. She is very shy, so she doesn’t enjoy the party. => If……………………………………………………………..

6. I will get a work permit. I will stay for another month. => If……………………………………………………………..

 

1
10 tháng 8 2021

1. He can’t go out because he has to study for his exam. => If………he didn't have to study for his exam, he could go out…………………………………………..

2. She is lazy so she can’t pass the exam. If……she weren't lazy, she could pass the exam…………………………………………………

3. He will pay me tonight; I will have enough money to buy a car. => If………he pays me tonight, I will have enough money to buy a car.…………………………………………………….

4. He smokes too much; that’s why he can’t get rid of his cough. => If……he didn't smoke too much, he could get rid of his cough………………………………………………………..

5. She is very shy, so she doesn’t enjoy the party. => If…………she weren't shy, she would enjoy the party…………………………………………………..

6. I will get a work permit. I will stay for another month. => If………we get a work permit. I will stay for another month ……………………………………………………..

15 tháng 9 2016

In a hour, Tom and Jack can do: \(\frac{1}{3}\) (the job)

In a hour, Tom can do: \(\frac{1}{4}\) (the job)

So in a hour, Jack can do: \(\frac{1}{3}-\frac{1}{4}=\frac{1}{12}\) (the job)

Thus, if Jack built the same fence alone, it would take 12 hours.

14 tháng 9 2016

làm sao để hỏi câu hỏi vậy giúp mình đi nhan

23 tháng 8 2017

1. Having

2. Not to touch

3. Behaving

4. Smoking

5. To know

Anywhere you are, I am nearAnywhere you go, I'll be thereAnytime you whisper my name, you'll seeHow every single promise I keepCuz what kind of guy would I beIf I was to leave when you need me mostWhat are wordsIf you really don't mean themWhen you say themWhat are wordsIf they're only for good timesThen they don'tWhen it's loveYeah, you say them out loudThose words, They never go awayThey live on, even when we're goneAnd I know an angel was sent just for meAnd I know I'm meant to be where I...
Đọc tiếp

Anywhere you are, I am near
Anywhere you go, I'll be there
Anytime you whisper my name, you'll see
How every single promise I keep
Cuz what kind of guy would I be
If I was to leave when you need me most

What are words
If you really don't mean them
When you say them
What are words
If they're only for good times
Then they don't
When it's love
Yeah, you say them out loud
Those words, They never go away
They live on, even when we're gone

And I know an angel was sent just for me
And I know I'm meant to be where I am
And I'm gonna be
Standing right beside her tonight

And I'm gonna be by your side
I would never leave when she needs me most

What are words
If you really don't mean them
When you say them
What are words
If they're only for good times
Then they don't
When it's love
Yeah, you say them out loud
Those words, They never go away
They live on, even when we're gone

Anywhere you are, I am near
Anywhere you go, I'll be there
And I'm gonna be here forever more
Every single promise I keep
Cuz what kind of guy would I be
If I was to leave when you need me most

I'm forever keeping my angel close

 

Ai dịch được bài này thì kb với mình nha hay lắm mở nghe

1
4 tháng 12 2016

bai what are world

dung ko

mk cung thik bai nay

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work...
Đọc tiếp

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

1

4. Call that polynomial P (x) = ax3 + bx2 + cx + d

We have P(1)=a+b+c+d=3   (1)

P(2)=8a+4b+2c+d=3   (2)

P(3)=27a+9b+3c+d  =7       (3) 

P(4)=64a+16b+4c+d     =21    (4)

From (1) and  (2) =>  7a+3b+c=0

From (1) and  (4)  => 63a+15b+3c=18

=> 12b+6c=-18  => 2b+c=-3

From (1) and  (3) =>26a+8b+2c=4=> 13a+4b+c=2

=> 13a+2b=5

It is possible

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work...
Đọc tiếp

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

2
1. Tiffany và Ryan gửi một số tiền vào tài khoản ngân hàng chung sao cho tổng số dư còn lại 500. Nếu số tiền được gửi bởi Tiffany và Ryan được vẽ dưới dạng biểu đồ tuyến tính trên mặt phẳng xy, hãy tìm khu vực giữa biểu đồ này và trục tọa độ. 2.Một nhóm công nhân đang mở đường. Nếu họ mở 200m đường mỗi ngày, họ sẽ cần thêm 3 ngày nữa. để hoàn thành công việc. Nếu họ mở 240m đường mỗi ngày, họ sẽ hoàn thành công việc trước 2 ngày. Bao lâu là đường, tính bằng mét? 3. Bà Darlie có một chiếc nhẫn bạc, một chiếc nhẫn vàng và một chiếc nhẫn kim cương. Cô đặt chúng lên tay trái. Mỗi chiếc nhẫn có thể nằm trên bất kỳ ngón tay nào trong năm ngón tay. Khi có hai hoặc ba chiếc nhẫn trên cùng một ngón tay, nếu thứ tự chúng được đặt khác nhau, thì đó là một cách khác nhau. Có bao nhiêu cách khác nhau để Lea đặt những chiếc nhẫn này? 4. Đặt P (x) là một đa thức có bậc 3 sao cho P (1) = 3, P (2) = 3, P (3) = 7, P (4) = 21. Tìm giá trị của P (5).
21 tháng 6 2019

#)Góp ý :

Mấy câu như thế này thì bạn nên lên Discuss with Math You - MathYou hỏi nhé ^^

Vì web này chuyên cho học sinh giải toán tiếng anh nên lên đây hỏi sẽ tiện hơn

11. The teenagers aren’t buying that model these days. A. That model isn’t being bought by the teenagers these days. B. That model isn’t bought these days by the teenagers. C. On these days that model isn’t being bought due to the teenagers. D. Because of that model isn’t being bought these days by the teenagers 12. People say that he is the most experienced teacher of English. A. He is said to be the most experienced teacher of English. B. He is said the most experienced teacher of...
Đọc tiếp

11. The teenagers aren’t buying that model these days.

A. That model isn’t being bought by the teenagers these days.

B. That model isn’t bought these days by the teenagers.

C. On these days that model isn’t being bought due to the teenagers.

D. Because of that model isn’t being bought these days by the teenagers

12. People say that he is the most experienced teacher of English.

A. He is said to be the most experienced teacher of English.

B. He is said the most experienced teacher of English.

C. He said the teacher of English is most experienced.

D. That he is the most experienced teacher of English is said by people.

13. People believe that he is a good teacher.

A. It is believed that he was a good teacher. B. He is believed to be a good teacher.

C. They were really believed he is a good teacher. D. He is believed to have been a good teacher.

14. It is thought that he has died a natural death.

A. He is thought to have died a natural death. B. He is thought to be dying a natural death.

C. He is thought to have been dying a natural death. D. He is thought to die a natural death.

15. The coach said, “It’s time for you to go home, boys!”

A. The coach told the boys that it was time for you to go home.

B. The coach tells the boys that it was time for them to go home.

C. The coach told the boys that it is time for them to go home.

D. The coach told the boys that it was time for them to go home.

16.“Why don’t you go with me?” she asked me.

A. He asked me why I don’t go with him. B. He asked me why didn’t I go with him.

C. He asked me why I didn’t go with him. D. He asked me why he didn’t go with me.

17. Why don’t we recycle bottles and cans?

A. We must recycle bottles and cans, mustn’t we? B. What do we recycle bottles and cans for?

C. Shall we recycle bottles and cans? D. How can we recycle bottles and cans?

18. “Why don’t you use the new car, Mr Son?” said Nam.

A. Nam made Mr Son to use the new car. B. Nam asked Mr Son not to use the new car.

C. Nam suggested that Mr Son use the new car. D. Nam suggested that Mr Son uses the new car.

19“Why don’t you use the new car, Mr. Son?” said Nam

A. Nam made Mr. Son to use the new car. B. Nam asked Mr. Son not to use the new car.

C. Nam suggested that Mr. Son use the new car. D. Nam suggested that Mr. Son uses the new car.

20.“You should not lend Susan any more money, Linda” said Nancy.

A. Nancy advised Susan not to borrow any more money from Linda.

B. Nancy advised Linda not to lend Susan any more money.

C. Linda advised Susan not to lend Linda any more money.

D. Nancy advised Linda to lend Susan some more money.

1
3 tháng 3 2020

11. The teenagers aren’t buying that model these days.

A. That model isn’t being bought by the teenagers these days.

B. That model isn’t bought these days by the teenagers.

C. On these days that model isn’t being bought due to the teenagers.

D. Because of that model isn’t being bought these days by the teenagers

12. People say that he is the most experienced teacher of English.

A. He is said to be the most experienced teacher of English.

B. He is said the most experienced teacher of English.

C. He said the teacher of English is most experienced.

D. That he is the most experienced teacher of English is said by people.

13. People believe that he is a good teacher.

A. It is believed that he was a good teacher. B. He is believed to be a good teacher.

C. They were really believed he is a good teacher. D. He is believed to have been a good teacher.

14. It is thought that he has died a natural death.

A. He is thought to have died a natural death. B. He is thought to be dying a natural death.

C. He is thought to have been dying a natural death. D. He is thought to die a natural death.

15. The coach said, “It’s time for you to go home, boys!”

A. The coach told the boys that it was time for you to go home.

B. The coach tells the boys that it was time for them to go home.

C. The coach told the boys that it is time for them to go home.

D. The coach told the boys that it was time for them to go home.

16.“Why don’t you go with me?” she asked me.

A. He asked me why I don’t go with him. B. He asked me why didn’t I go with him.

C. He asked me why I didn’t go with him. D. He asked me why he didn’t go with me.

17. Why don’t we recycle bottles and cans?

A. We must recycle bottles and cans, mustn’t we? B. What do we recycle bottles and cans for?

C. Shall we recycle bottles and cans? D. How can we recycle bottles and cans?

18. “Why don’t you use the new car, Mr Son?” said Nam.

A. Nam made Mr Son to use the new car. B. Nam asked Mr Son not to use the new car.

C. Nam suggested that Mr Son use the new car. D. Nam suggested that Mr Son uses the new car.

19“Why don’t you use the new car, Mr. Son?” said Nam

A. Nam made Mr. Son to use the new car. B. Nam asked Mr. Son not to use the new car.

C. Nam suggested that Mr. Son use the new car. D. Nam suggested that Mr. Son uses the new car.

20.“You should not lend Susan any more money, Linda” said Nancy.

A. Nancy advised Susan not to borrow any more money from Linda.

B. Nancy advised Linda not to lend Susan any more money.

C. Linda advised Susan not to lend Linda any more money.

D. Nancy advised Linda to lend Susan some more money.

THÔNG BÁO KẾT QUẢ VÒNG 2 VÀ MỞ VÒNG 3 CUỘC THI TOÁN TIẾNG ANH LẦN 3 - VEMC 2020 Vòng 2 đã kết thúc với 27/37 bạn nộp bài làm, 12 bạn xuất sắc nhất đã có tấm vé tham dự vòng 3 - vòng chung khảo. Xin được chúc mừng những bạn sau có số điểm \(\ge59\) đã có giải thưởng 3GP của vòng này (thầy @phynit sẽ trao giải sau khi cuộc thi kết thúc): 1. TRẦN MINH HOÀNG (+5 điểm vào vòng 3) 2. Trần Thanh Phương (+3 điểm vào...
Đọc tiếp

THÔNG BÁO KẾT QUẢ VÒNG 2 VÀ MỞ VÒNG 3 CUỘC THI TOÁN TIẾNG ANH LẦN 3 - VEMC 2020

Vòng 2 đã kết thúc với 27/37 bạn nộp bài làm, 12 bạn xuất sắc nhất đã có tấm vé tham dự vòng 3 - vòng chung khảo. Xin được chúc mừng những bạn sau có số điểm \(\ge59\) đã có giải thưởng 3GP của vòng này (thầy @phynit
sẽ trao giải sau khi cuộc thi kết thúc):

1. TRẦN MINH HOÀNG (+5 điểm vào vòng 3)

2. Trần Thanh Phương (+3 điểm vào vòng 3)

3. Nguyễn Thế Mãnh (+2 điểm vào vòng 3)

4. White Hold (+2 điểm vào vòng 3)

5. Phan Đỗ Thành Nhân (+2 điểm vào vòng 3)

6. Nguyễn Thị Ngọc Hân (+1 điểm vào vòng 3)

7. Dương Nguyễn (+1 điểm vào vòng 3)

8. Takahashi Eriko Mie (+1 điểm vào vòng 3)

9. Nguyễn Thị Diệp (+1 điểm vào vòng 3)

10. An Võ (leo)

11. HISINOMA KINIMADO

12. ling Giang nguyễn

Bảng điểm chi tiết và đáp án: https://drive.google.com/file/d/1wybx9tovwUSFUlMG43HIdFLK_BZipy_6/view?usp=sharing

Xử lí vi phạm: có 1 trường hợp vi phạm mức trung bình do tra bài trên mạng và dùng nhiều tài khoản (lần đầu đã bỏ qua nhưng vẫn tiếp tục vi phạm). Bạn này sẽ bị loại khỏi cuộc thi, không được nhận GP thưởng vòng 1 và bị trừ hết số GP,SP trong tất cả 3 tài khoản bạn dùng.

Vòng 3 sẽ bắt đầu từ bây giờ và kết thúc vào 23h59 ngày 12/8/2020 (thứ tư, 3 ngày). Link: Vòng 3 - Vòng chung khảo.

Chúc các bạn làm bài thật tốt và giành được giải thưởng chung cuộc!

-------------------------------------------------------------------------------------

A short story before the final round!

Math is how big your potential is! If you care more about it, you'll get used to every problem, even the impossible. Let's see if this is right:

I had a close friend who is fond of maths, but still doesn't believe how big and incredible his logical-thinking mind is. A few days ago, I asked him to solve a numeral problem, which is problem 3 down here. For the first minutes thinking, he couldn't get the answer. Then I challenged him with a big award if he solved it within a day. I think this is one of the hardest problem I've ever made. But only after 45 minutes, he gave the correct answer, leaving me shocked behind. I lost blow-minded :) You see, if you have a clear target and if you have something to wait after doing something, your potential will be the key to the problem. So, with the grand award 100.000 VND phone card and 30GP added to the hoc24 account, what are you waiting for? Let's see if you can solve problem 3 and five other problems clearly!

11
QT
Quoc Tran Anh Le
Giáo viên
10 tháng 8 2020

Giải thích đáp án:

1. B (câu này tính theo quy luật là ra ngay)

2. A (câu này thuộc dạng tỉ lệ thuận, tỉ lệ nghịch)

3. D

Câu này đánh lừa được rất nhiều bạn! Từ 27 phôi thép, bạn làm được 27 chi tiết, từ các phần thừa tạo tiếp được 9 phôi thép. Từ 9 phôi này các bạn cũng làm ra được 9 chi tiết máy, và phần thừa tạo tiếp được 3 phôi thép. Từ 3 phôi này các bạn tạo ra được 3 chi tiết máy và 1 phôi thép. Phôi thép này cũng tạo ra được 1 chi tiết máy.

Như vậy có tổng 27 + 9 + 3 + 1 = 40 (chi tiết máy)

4. B

Violympic toán 9

5. stir-fried noodle (dùng biểu đồ Venn hoặc phương pháp đồ thị để tìm ra lời giải. Lưu ý "fish rice" chỉ thỏa mãn 2/3 yếu tố)

6. 14 (tương tự câu 4, ta cũng dùng nguyên lí Dirichlet)

7. 19 (câu này nhiều bạn đã tìm được quy luật)

10 tháng 8 2020

vô bảng điểm, vào sheet thứ 2