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Saga nói với Helen rằng tích của 3 số nguyên dương là 36. Saga cũng nói với Helen tổng của 3 số, nhưng Helen vẫn chưa biết 3 số đó là gì. Tổng của 3 số là bao nhiêu?

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions. (1pt) Good manners are of great value to the people who possess them, as well as to the community they live in. Manners are taught, learnt, and passed from generation to generation. Even hundreds of years ago, children were taught to behave responsibly. They learnt to respect seniority. When they passed an object to another person, they had to use both hands. When they entered a room, they had to bow and greet the oldest person first. Boys learnt to work hard to support their families. Girls learnt to do housework, and to take care of others. Loyalty and honesty were highly appreciated. When they made a mistake, they would not let another person be punished for it. That would be cowardly and mean. They were taught that families were strong, and everybody should stick together in adversity. Fortunately, many of these values have been well preserved. They have contributed to making the unique Vietnamese culture, and strengthening our society. Question 20. What was seen as a boy’s main duty? A. to respect seniority B. to share good things C. to do housework D. to support his family Question 21. What was seen as a girl’s main duty? A. to do housework B.to take care of others C. to support his family D. A&B are correct Question 22. The underlined word “they” refers to ___________. A. children B. generations C. tradition D. seniority Question 23. This passage is about _____________. A. people who possess good manners B. what bad manners children in the past had C. good manners and their value D. the preservation of bad values

Cho $a,b,c$ là số dương thay đổi và luôn thỏa mãn $ab + bc + ca = 3abc$. Tính giá trị lớn nhất của biểu thức $\dfrac{1}{a + 2b} + \dfrac{1}{b + 2c} + \dfrac{1}{c + 2a}$

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Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.(1,5pt) Question 5: Gagarin flew into space eight years before Armstrong walked on the moon. A B C D Question 6: My father, that will retire next year, works in the bicycle factory. A B C D Question 7: We suggested avoid walking in the rain A B C D B2: Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each numbered blank. (1pt) English is a very useful language. If we (16) ………. English, we can go to any countries we like. We will not find it hard to make people understand (17) ………. we want to say. English also helps us to learn all kinds (18) ……….subjects. Hundreds of books are written in English every day in (19) ………. countries. English has also helped to spread ideas and knowledge all corners of the world. Therefore, the English language has helped to spread better understanding and friendship among countries. Question 16: A. know B. have C. learn D. write Question 17: A. what B. where C. why D. which Question 18: A. for B. in C. of D. at Question 19: A. much B. little C. few D. many

Tìm số tự nhiên có bốn chữ số có tận cùng bằng 3, biết rằng nếu xóa chữ số hàng đơn vị thì số đó giảm đi 4863 đơn vị. CHÚ Ý ;nhớ giải thích

Giải giúp em với ạ Cm: P lớn hơn hoặc bằng 0

em hay viết đoạn văn (khoảng 200 chữ)theo kết cấu diễn dịch bày tỏ suy nghĩ của mình về ý nghĩa của lối sống cống hiến trong đó cs sử dụng phép nối(gạch chân) mn giúp mk vs ạk mk cần gấp ạk cảm ơn mn trc nha

Cho hình lăng trụ ABC.A'B'C' có đáy là tam giác đều cạnh a. Cạnh bên BB' =a√6. Hình chiếu vuông góc H của A trên mặt phẳng (A'B'C') trùng với trọng tâm của tam giác A'B'C'. Côsin của góc giữa cạnh bên và mặt đáy bằng