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Cheryl's birthday problem is a logic puzzle that requires no math. Here is the problem: Cheryl wants Albert and Bernard to guess her birthday, and gives these possible dates: May 15, May 16, May 19, June 17, June 18,                                                                 July 14, July 16, August 14, August 15, August 17.Albert knows the correct month, and Bernard knows the correct day.Albert says, "I don't know Cheryl's birthday, and I know Bernard doesn't know."Then Bernard says, "I...
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Cheryl's birthday problem is a logic puzzle that requires no math. Here is the problem: Cheryl wants Albert and Bernard to guess her birthday, and gives these possible dates: May 15, May 16, May 19, June 17, June 18,

                                                                 July 14, July 16, August 14, August 15, August 17.

Albert knows the correct month, and Bernard knows the correct day.

Albert says, "I don't know Cheryl's birthday, and I know Bernard doesn't know."

Then Bernard says, "I didn't know at first, but I now know Cheryl's birthday."

Albert says, "Now I also know!" When is Cheryl's birthday?

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Đây là một bài toán (puzzle maths problem) rất hay từng gây rất nhiều tranh cãi MXH

Mình làm được và đã có kết quả nhưng muốn chia sẻ với tất cả mọi người về bài toán này 

Mình muốn các bạn tự làm bằng tiếng Việt (vì đã có đáp án bằng tiếng Anh) và không sao chép kết quả từ trên mạng.

Bạn nào làm đúng mình sẽ tick XD

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Lần sau bạn nhớ đăng đúng môn học nhé

23 tháng 3 2020

Cậu sẽ bị báo cáo vì đăng ko đúng chủ đề..Rất mong bạn sẽ ko tái phạm lần sau

45 lượt xem Bạn đã được cộng thêm +1 điểm online, tổng điểm: 32 REVIEW GRADE 8- UNIT 9-10-11 I. MULTIPLE CHOICE 1. We don’t know the name of the injured person. A. burned B. sterile C. wounded D. unconscious 2. Don’t let the victim become chilled. A. looked tired B. fall asleep C. appeared hungry D. get cold 3. They filled the bucket with water from the river. A. container B. glass C. pot D. bowl 4. The boy fell his bike and hit his head on the...
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45 lượt xem Bạn đã được cộng thêm +1 điểm online, tổng điểm: 32

REVIEW GRADE 8- UNIT 9-10-11
I. MULTIPLE CHOICE
1. We don’t know the name of the injured person.
A. burned B. sterile C. wounded D. unconscious
2. Don’t let the victim become chilled.
A. looked tired B. fall asleep C. appeared hungry D. get cold
3. They filled the bucket with water from the river.
A. container B. glass C. pot D. bowl
4. The boy fell his bike and hit his head on the road.
A. of B. for C. off D. out
5. Cool it immediately so as to minimize tissue damage
A. reduce B. deepen C. widen D. enlarge
6. People use first aid in order to the victim's pain and anxiety.
A. cure B. treat C. increase D. ease
7. We can stop the bleeding by using a towel to cover the wound, then put on it.
A. pressure B. medicine C. bandage D. cloth
6. Don't give the victim any food or drink if he or she gets .
A. happy B. sad C. shock D. fainting
7. Cover the burned area with a thick dressing.
A. polluted B. sterile C. dry D. affected
8. Farmers collect household and garden waste to make .
A. compost B. floor coverings C. pipes D. glassware
9. My sister sold all the empty cans she collected funds for the orphans.
A. to take B. to rise C. to raise D. to use
10. You will get back your when you bring the cans back for recycling.
A. deposit B. account C. envelop D. payment
11. means not buying products which are over packaged.
A. Reuse B. Recycle C. Reduce D. Refund
12. is a long thin piece of cloth or paper used for tying round and protecting a wound.
A. Water packs B. Bandage C. Blanket D. Handkerchief
13. She has already her cup five or six times.
A. refilled B. reduced C. reviewed D. recycled
14. The cup of coffee kept her all night.
A. awake B. alone C. asleep D. alive
15. I think we should use such as banana leaves, lotus leaves to wrap things.
A. tree products B. tree leaves C. fruit skins D. trees
16. Plastic bags are difficult to be destroyed, so the amount of garbage will .
A. go down B. reduce C. increase D. go away
17. We felt very happy Tet.
A. since B. in C. on D. at
18. The farmers look for other work get more money for their family.
A. in order to B. so as C. in order that D. so that
19. You should put the affected part under a running cold tap when you have .
A. a shock B. a faint C. a burn D. a pain

20. You should elevate the patient’s feet above the level of the heart.
A. raise B. rise C. press D. reduce
21. A is used for carrying somebody who is sick or injured and who can’t walk.
A. bandage B. armchair C. wheelchair D. crutch
22. Typhoons, floods or droughts can easily a harvest.
A. destroy B. finish C. provide D. defeat
23. My father has worked for that company over ten years.
A. for B. since C. at D. in
24. One of the solutions to reduce the shopping garbage is using .
A. plastic bags B. cloth bags C. wood bags D. liquid bags
25. can take a patient to the hospital quickly.
A. A crutch B. An ambulance C. A wheelchair D. A scale
26. He tried to explain what he did persuade his customers.
A. in order that B. in out of C. so as to D. so as not as
27. Contact an organization like Friend of the Earth information.
A. for B. to C. with D. about
28. He picked the phone as soon as it rang.
A. on B. up C. in D. off
29. How about going to Vincom Center for dinner, Alex?
A. That’s sound interesting. B. That sounds interesting.
C. Not at all. D. Please go ahead.
30. is a type of bed used for carrying the sick or injured people.
A. Stretcher B. Ambulance C. Crutch D. Bandage
31. My sister-in-law fainted but the nurse helped her soon.
A. ease B. revive C. minimize D. cool

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16 tháng 3 2020

Sao toán lại có Tiếng Anh :))

11 tháng 7 2017

mẹ ơi nhìn đã ngất hồn 

11 tháng 7 2017

ai làm nhanh mình kích cho

27 tháng 10 2015

Mái trường cho dù họ đã phai mờ nhưng vẫn không chắc chắn, bao gồm hai dãy phòng và ba phòng cho khu vực hành chính. Trong lớp học của tôi rất sạch sẽ và ngăn nắp vì chúng tôi rất ý thức về vệ sinh và sạch sẽ.

Học sinh của trường đang học có nhiều cây xanh bóng mát và băng ghế trong sân trường, tôi yêu trường tôi và tôi đến trường mỗi ngày.

Các giáo viên nói với chúng tôi luôn tuân thủ các quy định của trường, và chúng tôi không viết vẽ bậy trên bàn làm việc để giữ cho bạn môi trường sạch sẽ và đẹp.

Tôi thực sự muốn đi học vì mỗi gặp nhiều bạn bè, để gặp gỡ giáo viên. Ngôi trường này là nơi thắp sáng ước mơ cho tôi, sau đó tôi sẽ ước mơ trở thành cô giáo dạy tại trường này.

29 tháng 2 2020

1. He is used to------------ up early in the morning.
A. get B. getting C. have gotten D. got
2. The boy was kept indoors----------- naughty.
A. to be B. have been C. for being D. when he
3. I shall never forget-----------with you to Paris last year.
A. staying B. to staying C. to stay D. stayed
4. I am looking forward to -----------you.
A. having seen B. seeing C. to see D. all are wrong
5. I am always remember------------ off the lights before I leave my house.
A. turning B. to turn C. turned D. being turned

1. Put the verbs in the brackets into infinitive (V/to V ) of gerund (V-ing)1. John dislikes ( wrok) _______________in front of a computer all day2. I'd like ( visit) ___________the VietNam Museum of Ethnology this weekend3. I'd rather ( make) ___________crafts than listen to music4. Minh loves (help) ____________ her parents with DIY projects5. Quang hates ( take)___________the dog for a walk6. We all adored (do) ___________aerobics when we were young7. You should ( play) __________ sports to...
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1. Put the verbs in the brackets into infinitive (V/to V ) of gerund (V-ing)

1. John dislikes ( wrok) _______________in front of a computer all day

2. I'd like ( visit) ___________the VietNam Museum of Ethnology this weekend

3. I'd rather ( make) ___________crafts than listen to music

4. Minh loves (help) ____________ her parents with DIY projects

5. Quang hates ( take)___________the dog for a walk

6. We all adored (do) ___________aerobics when we were young

7. You should ( play) __________ sports to keep fit

8. They don't need (watch ) ___________that programme if they don't like it

9. Do you fancy ( socialise )__________with friends ?

10. My brother prefers (surf) _________the Net

2. Use the gerund of the verbs in the box to complete the sentences

collect , do , eat , listen , play , ride , take , wash , watch , write

1. My sister enjoys ___________aerobics in the morning

2.Lucia fancies _____________ emails after dinner

3. In his free time , Quang likes ___________ photographs

4. Are you interested in ____________ handball , Peter?

5. Vinh's brother loves ___________foreign coins , doesn't he?

6. David hates _________ a bike to school on rainy days

7. I prefer ____________DVDs to going to the cinema

8. Nam detests _________ the dishes every day

9. We don't mind _______to classical music

10. The Robinsons adore _________ Vietnamese food

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23 tháng 7 2020

Một giờ người thứ nhất làm được \(1:\frac{2}{5}\) = \(\frac{5}{2}\left(cv\right)\)

=> 12 min người thứ nhất làm được \(\frac{5}{2}.\frac{1}{5}\)=\(\frac{1}{2}\left(cv\right)\)

Số phần công việc còn lại: \(1-\frac{1}{2}=\frac{1}{2}\)

Người thứ hai làm một mình hết: \(1:[(\frac{1}{2}:\frac{1}{9})-\frac{5}{2}]\) =\(\frac{1}{2}\) (h)