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Sắp xếp bởi

Hoàng T

21 tháng 9 2023 12:03

phan so la gi

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2

Giáp P

21 tháng 9 2023 10:17

2) Cho tập A={0,1,2,3,4,5}. Có bạo nhiêu số gồm 5 chữ số của A mà mỗi số có đưng 3 chữ số giống nhau?

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2

Giáp P

21 tháng 9 2023 10:16

Xác định số cách chọn bộ 5 số từ tập 18 số nguyên dương đầu tiên sao cho 2 số bất kỳ trong 5 số được chọn có hiệu số giữa số lớn và số bé lớn hơn hoặc bằng 2 .

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Giáp P

21 tháng 9 2023 09:53

1) Xét đa giác đị̀n 105 đỉnh, hỏi có bao nhiêu đa giác đều có đỉnh là đỉnh đa giác đã cho?

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Giáp P

21 tháng 9 2023 09:52

undefined 2) Tìm số bộ (x,y,z,t) nguyễn khōng âm thỏa mān {,(,x+y+z+t=40,),,(,x≤4,),

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Mai L

20 tháng 9 2023 12:48

tìm tổng số nghiệm của bất phương trình thõa mãn điều kiện x,y∈N ; x+2y<400

5

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Hoàng T

20 tháng 9 2023 12:47

điền 5 số tiếp theo: 3,6,9,12,24

5

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Nguyễn H

20 tháng 9 2023 12:40

M = 4x * y ^ 2 * (- 2) * x * y ^ 2

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Nguyễn H

19 tháng 9 2023 13:32

I. Supply the correct word forms 1. He is a ___________ boy. He is always asking questions. (Curiosity) 2. All the pupils have done the exercises ___________. (easy) 3. Keep ________! The teacher is explaining the lesson.(silence) 4. Be __________ in your work. (care) 5. Time passes ____________ when you are alone (slow) 6. He drives _______________. He rarely has accident. (care) 7. Ho Chi Minh city is an important ______________ centre (commerce) 8. We have a __________ newspaper in this town (week) 9. This exercise seems _________ (difficulty) 10. Mrs Green can help Alice to make a good _____________ (choose) 11. He has _____________ bought a new car (recent) 12. How _____________the dress is! (expense) 13. How _________- those shopwindow are! (beauty) 14. She has finished her best ____________ (perform) 15. The cartoon last night was very ______________ (interest) 16. She _________________ goes to the movies with her younger sister (frequency) 17. Last night the singer sang very _______________ (good) 18. The story is about an ___________ trip (excite) 19. In May the days often _____________ (long) 20. He got rid of the _____________ by opening a window (smell) 21. Nobody shoed them to their ______________ (sit) 22. Helen speaks English very ______________ (fluent) 23. This is the most _______________ machine in our field (value) 24. We can keep the land in ___________ condition by killing weeds (well) 25. Jack plays footbal _________________ (splendid) 26. The ball was followed with great _______________ (excite) 27. That was an ______________ match, wasn’t it? I was ___________ to see it (excite) 28. _________ is a good career. I want to become a _____________ (teach) 29. Rubber trees are very _____________ (use) 30. Sports are very good for our _______________ (healthy) 31. Who will take _________ of the baby when you go away? (careful) 32. Don’t worry about her ___________ (complain) 33. What is the real ____________ of the house? (wide) 34. I want to make new dresses but I don’t have a ___________ machine. (sew) 35. She danced so __________ that the audience clapper their hands many times (beauty) 36. I’ll have Tom repair our electric _________ (cook) 37. Water has no colour. It is a ___________ liquid (colour) 38. Please don’t make _______________ (noisy) 39. Mr Green works in this factory as a shop __________ (keep) 40. Ky Hoa lake is one of the areas of ___________ (entertain) 41. Butter is one of the __________ of milk (produce) 42. He is a ___________ person. He often makes me laugh (fun) 43. I want to know how people ___________ New Year in your country. (celebration) 44. On Christmas day, I often send my close friends _________ cards (greet) 45. He is a famous __________ in this country. (act) 46. He often writes stories. He is a ___________ (write) 47. These flowers look __________ (nature) 48. It’s not ______________ to answer this question. (difficulty) 49. His play were ____________ on the stage in London (performance) 50. The film is __________ so I’m _____________ (bore) 51. The Sword lake is one of __________ places in Hanoi (history) 52. He devoted all his ______________ to writing (live) 53. How ___________ the street is (danger) 54. She lives ______________ although she is very poor (happy) 55. I’ll help you to ____________ some beautiful paintings (choice) 56. The love for book is _____________ in developing the pupils’ knowledge (help) 57. This public library is ________________ to all people (open) 58. Books help people to get more ____________ (know) 59. ___________ countries need help from _______________ ones (develop) 60. This stamp ____________ is valuable. 61. The person who takes care of books in the library is a ____________ (library) 62. He is very _________ (friend) 63. She smiles so _____________, doesn’t she? (attract) 64. My ____________ for your skill is great (admire) 65. We all held our breath because of that ________________ film (thrill) 66. I only had a day to visit all the tourist ___________ (attract) 67. They ride their bicycles to the countryside for _______________ (please) 68. Red ________ comunist countries (symbol) 69. May Day is celebrated regularly in ______________ countries (society) 70. He lost the game because of his ________ (care) 71. The teacher stressed the need for regular ________________ (attend) 72. The cost of __________ must be paid by the buyer (carry) 73. Our _________ from London to Sydney took 24 hours (fly) 74. The police are interested in the sudden __________ of the valuable painting (appear) 75. The master gave Oliver Twist a terrible _____________ (punish) 76. He gave no _____________ for his absence (explain) 77. They were happy because their work has finished ____________ (success) 78. To prepare his ____________ works, Karl Marx often spent whole days in the library of the British Museum (science) 79. He is respected for his ______________ (simple) 80. They had made a lot of ___________ before the game started (prepare) 81. Manchester players have been trying to score another goal, but their efforts are ________ (succeed) 82. We must make _______ for his youth. 83. An _________ man has stolen all our money (know) 84. Two of these tablets should be taken ____________ (day) 85. Dogs are very _____________ pets (faith) 86. The Thames flows _____________ through green meadows (gentle) 87. Relax in our ___________ chairs and enjoy our excellent tea and hot chocolate (comfort) 88. I’m so __________ you’re going to visit my country (please) 89. What a naughty boy! He always does things ____________ (noise) 90. There were ten _________ in the race (complete) 91. His ___________ makes his parents feel sad (lazy) 92. You should _________ to your teacher (apology) 93. Jack is _____________ of his essay on the Thames (pride) 94. Paris is ________________ for the Eiffel tower (fame) 95. He worked hard to _________ good crops from poor soil (product) 96. How ____________ of you to break that cup! (care) 97. His long ______________ made us bored and sleepy (speak) 98. He never takes his father’s ___________ (advise) 99. They sat ___________ by the stream (quiet) 100. To my __________, the monkey peeled a banana and offered it to me (amaze) 101. _____________ air and water are not good for our health (pollute) 102. Air ________ makes us unhealthy (pollute) 103. The ___________ of the people in our community with the government is very necessary (cooperate) 104. The paper mill _________ two tons of paper a day. Its ____________ is one of the highest in our province. (produce) 105. My new car is more ____________ than the one I had before (economy) 106. Nothing could ________ him (satisfaction) 107. She got great _______ of helping others (satisfy) 108. There have been many __________ developments in the field of science (wonder) 109. Many people say that _______ is the happiest time (child) 110. We didnn’t agree with his ___________ (decide) 111. Most orphans are bred in _____________ (orphan) 112. Thousands of people were made __________ by th war (home) 113. Mrs Brown lived lonely in her _____________ (poor) 114. He was ____________ because he could not pay his debts (sadness) 115. Dickens’ novels were first ___________ in 1838 (publish) 116. I really don’t think he has the _____________ to do this job (able) 117. They work ____________ (good) 118. _________________ covers the sky at night (dark) 119. Hard work always brings ___________ (succeed) 120. He was very ___________. He was a ________________ (patriotism) 121. ______________ methods of farming have helped to increase rice production a great deal (science) 122. Mr Hung went ______________ last Sunday (shop) 123. These abbreviations are ____________ used in writing letters (common) 124. I would recommend that you should be interested in reading ________ books and magazine (education) 125. John is old enough to be _____________ of his parents (depend) 126. It takes years of _________ to acquire the skill of a ballet dancer (practice) 127. These questions are _____________. John can _____________ answer them (ease) 128. A spaceman must learn to become accustomed to __________ in a spaceship (weight) 129. Make sure that your time is spent __________ (use) 130. I’m __________ in your project because it is ______________ interest. 131. The teacher often _________ the students to ask questions (courage) 132. I can’t jump any ___________ (height) 133. The new law will ________________ many women to return to work. 134. Many people think that Faraday is the greatest ___________ in history (invent) 135. It was one of his most important _____________(achieve) 136. _______________ is often more useful than definition for giving the meanings of words (illustrate) 137. The boy was given a prize for regular ________ (attend) 138. His discoveries had a great _______________ on workers (influential) 139. Where were the competitions _________ (organization) 140. The representatives joining the festival were different from ___________ (national) 141. They have a good ________ with their neight bours (relative) 142. He left for a ______________ of reason (vary) 143. You can bust him, He is always __________, and evevrything he says is ___________ (truth) 144. Many of buildings in the city were moved to make way for _________ (develop) 145. She has been very _______________ since her husband died (poverty) 146. We should learn all the new words by hear in order to _____________ our vocabulary (rich) 147. The little boy felt very _____________ because his parents didn’r let him go with them (disappoint) 148. She can’t go to school because of her _____________ (sick) 149. The _________ of that little girl makes the room more pleasant (present) 150. ____________ is a problem throughout the world (hungry) 151. Clever students ___________ knowledge easily (absorption) 152. With so many choices, it’s hard to __________ what to buy. (decision) 153. The village is very quiet and _______________ (peace) 154. All my efforts ended in _______________ (fail) 155. I was ___________ about the dates (confusion) 156. You should have a _______________ about scientific subjects if you want to be a scientist (curious) 157. Children need to have a good ______________ (educate) 158. __________ puzzles are funny (mathematics) 159. You don’t need to have a ___________ memory to be a scientist (mircle) 160. Our school team won three _________________ games (succession) 161. A scientist does not need a miraculous _____________ (memorize) 162. It will take a long time to find out a thorough ___________ to the problem of pollution (solve) 163. Traveling by train is very __________ (attract) 164. _______ have researched _________ subjects (science) 165. Countless _________ have been made in the textile industry (improve) 166. His father is an _______________ (architecture) 167. The _________ of world population is being studied (grow) 168. Japan is an ______________ country (industry) 169. She’s so busy with _____________ activities that she has no time for entertainment (society) 170. Every _____________ in science helps you gain new knowledge (succeed) 171. Coke is a __________ of cola flavour, water carbon dioxide and sugar (mix) 172. Some experts say cycling is one of the _____________ form of exercise. (safety) 173. Is there any ________ to treat her so badly? (necessary) 174. After the hot summer, there was a ___________ of water (short) 175. The _________ will make him a rich man (inherit) 176. The ______________ to the questions are at the back of the book (solve) 177. I’ll give you three sweets in ___________ for an apple (exchange) 178. In some countries, black people do not have ____________ with white people (equal) 179. Can you ____________ life withoout electricity and other modern conveniences? (imagination) 180. Mrs Tam has just bought a __________ object. It doesn’t cost even a pence. (value) 181. The United Nations _______ is an international one (organize) 182. Banks make loans to ______________ (borrow) 183. Banks provide _____________ which make it easier for us to pay bills and carry on business (serve) 184. The ___________ unit in France was the Fanc (money) 185. I’m worried about the _____________ of the children (safe) 186. What do you call the __________ relations among countries? (nation) 187. This restaurant is _______ for its western meals (fame) 188. They all passed their exams without the slightest ______________ (difficult) 189. Applied sciences have ____________ our homes (electrification) 190. The _____________ of a famous doctor was announced last night (die) 191. Don’t leave the lights on. It wastes __________ (electric) 192. These countries are ________ in imports of raw cotton (prefer) 193. The ___________ of the moon for the earth causes the tides (attract) 194. We ____________ go out for dinner but we cook our own meals most of the time (occasion) 195. Travelling a lot will __________ our minds (broad) 196. In some countries, _________________ has made young people buy thing they don’t need (advertise) 197. I can say with ____________ that you have made much progress in learning English (certain) 198. The company is very efficient and gives a ____________ service (speed) 199. You are very _________________ (intelligence) 200. People must have ______________ for the air pollution (responsible 201. Special drugs should be __________ and dispened carefully (manufacture) 202. Do you like _____________? (chemist) 203. We have some _______________ for typist (vacant) 204. He often went to work late, _____________ he was sacked (consequence) 205. He was __________ because of his illness (absence) 206. They looked at him in _____________ (astonish) 207. They live with a great ___________ belief (religion) 208. Please don’t ask such ______________ question (person) 209. He is __________ with his new job (satisfy) 210. This sun block lotion gives good ________ against harmful ultraviolet rays (protect) 211. She was too _________ to tell her teacher about the stupid mistakes (shame) 212. This photo has just been ______________ (large) 213. He always feels _______ in class because of his laziness (sleep) 214. She failed the driving test because she didn’t follow the guidance of driving ____________ (instruct) 215. He ______________ agreed to my suggestion (ready) 216. The island is _______________ only by boat (access) 217. They spent all their money and made no ______________ for their future (provide) 218. When foreigners ask him, he answers in English __________ (automatic) 219. What he has explained about that problem is _________________. (reason) 220. You must always tell the ______________ (true) 221. The girl looked __________ for a moment and then answered (think) 222. The country’s _______________ resources include forests, coal and oil (nature) 223. The agency offers practical _________ to people starting their own business (guide) 224. There is a __________ to overcome the problems (determined) 225. We were ______________ that she would be angry (fear) 226. These closures will mean _____________ for about 500 workers (employ) 227. The house was ______________ with people (crowd) 228. I’m ___________ sorry for the delay (extreme) 229. Because of his love for teaching, David would ___________ his teaching career (continuous) 230. It is often useful to make a ____________ between two things (compare) 231. He was __________ for the job by a committee (selection) 232. ___________ compounds are often used for fertilizers (chemist) 233. The smoke that comes from a lit cigarette contains many different _______ chemicals (poison) 234. Many ____________ developed countries spend much money preventing environmental pollution (industry) 235. Our atmosphere is becoming more and more ____________ (contaminate) 236. It is __________ to drive on the left in Vietnam (legal) 237. Can you ______________ what this word means? (explanation) 238. American women are used to being ____________ (independence) 239. We’d love to take up your ___________ to visit you some time. (invite) 240. You should spend your money __________ (economy) 241. The accident ________ him for life (deaf) 242. The workers have to know the ___________ of these devices (intense) 243. He has stood for two hors outside of the __________ room (surgery) 244. Skilled workers are ___________ admitted (prefer) 245. She’s conservative. She dowsn’t want any _____________ (transform) 246. A few diseases are still _________ in the world (treat) 247. Treating diseases by the laser is really a _________ (miraculously) 248. He always tells lies. His words are ______________ (value) 249. The dog took __________ in the fire (satisfy) 250. There was no keen _________ between the dog and the man (intimate) 251. Don’t ____________ bad habits in a child (courage) 252. Don’t be so ____________. We’ve only been waiting a few minutes (patient) 253. No one can measure the ______________ of this river (deep) 254. The town is _________ situated on the River Ouse (attract) 255. Playing the piano well is one of his greatest ___________ (satisfy) 256. The plane arrived __________ after a violent storm (safe) 257. When did __________ come to the village? (electric) 258. These snakes will not cause you any serious _________ enven if they bite you. They are ____________ (harm) 259. She is an ______________ mother in a few weeks more (expect) 260. He has no ______________ of leaving the city (intend) 261. Some children have to suffer from lifetime ________________ (abnormal) 262. Women nowadays have more _________ to participate in socia activities (free) 263. If you burn the garbage, it’ll give off __________ odour (poison) 264. We can prevent flood by ______________ the forests (preserve) 265. I like your new ____________ machine (calculate) 266. May I borrow your ___________? (calculate) 267. I’m ____________ money to buy a bicycle, so I’m a ______________ and my money ___________ (save) 268. ______________ is my hobby. I often have a __________ when I’m free (swim) 269. Farmers can help ________ the soil by adding fertilizers (rich) 270. Banking is the business of receiving ___________, and lending the money. (safeguard)

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Hiền L

18 tháng 9 2023 13:45

Bao giờ thì sai số dụng cụ mình dùng là nửa độ chia nhỏ nhất và 1 độ chia nhỏ nhất khi tính toán ạ???

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1676869
ask to forum

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