tìm 3 số tự nhiên liên tiếp trong đó số nhỏ là số chẵn và một trong số đó chia hết cho 9, tổng ba số đó là một số có ba chữ số và có các đặc điểm sau: -chia hết cho 5 -tổng các chữ số hàng trăm và hàng đơn vị chia hết cho 9 -chữ số hàng chục là chẵn

Bài 3: (1,5đ) Tính giá trị của biểu thức: (69 - 85). x -( -28 +47). y ; với x = 5, y = -6 Bài 4: (0,5đ) Tìm số nguyên n sao cho 3n + 2 chia hết cho n - 1

giúp mình bài 2 nha hữa vote 5 sao nha

Question 6. The left hand is customarily used for cleaning, ________Indian people never eat with their left hands. * 1 điểm A. so B. but C. however D. therefore Question 7. The extended family arranged marriage, _________individuals were consulted on the choice of their mate. * 1 điểm A. so B. and C. yet D. otherwise Mục khác: Question 8. _________the Chinese greet other people, they have the custom of bowling, folding their hands on chest. * 1 điểm A. Because B. Although C. When D. However Question 9. Emi: What do you enjoy doing in your spare time? Dennis: ________ * 1 điểm A. I don't want to eat bread for lunch. B. Walking in the morning makes me healthy. C. I love listening to music in the evening. D. I never enjoy doing things. Question 10. Tom: How much time a week do you have for these activities? Linda: ________ * 1 điểm A. About 3 hours per week. B. Once a month. C. Three times a week. D. Some time. Question 11. The sky is _______ here in the countryside because there are no buildings to block the view. * 1 điểm A. tidy B. dense C. large D. vast Question 12. Medical help is ________ easily obtained in remote areas than in towns. * 1 điểm A. more B. fewer C. less D. higher Question 13. The wind is blowing __________ than it did last night. * 1 điểm A. stronger B. more strongly C. stronglier D. more stronger Question 14. At 2 pm tomorrow we ___________ a meeting in Da Nang. * 1 điểm A. are attending B. will attend C. will be attending D. attend Question 15. We all adored _________ aerobics when we were young. * 1 điểm A. do B. doing C. to play D. playing Question 16. The Hung King Temple Festival _____________ from the 8th day of the third lunar month in Phu Tho. * 1 điểm A. takes B. takes part C. takes place D. takes turn Question 17. During the Buddhist Festival, visitors join the procession and make offerings to __________ Buddha at the pagoda. * 1 điểm A. think about B. consider C. worship D. believe Question 18. I think the Kate Festival is a really joyful festival which _________ many activities. * 1 điểm A. contains B. holds C. features D. includes in Question 19. In Viet Nam, the __________ we mostly use is chopsticks. * 1 điểm A. cut B. cutting C. cutlery D. cutlet Question 20. You shouldn’t __________your promise to the children. * 1 điểm A. break B. cut C. keep D. save Question 21. He has been living 15 km away from Nha Trang; __________, he has never been to the Nha Trang carnival. * 1 điểm A. if B. moreover C. however D. while Question 22. The ___________ of Quan ho singing has been recognised as a world heritage. * 1 điểm A. preservation B. procession C. performance D. song Question 23. _________ the Mongols were very powerful, Tran Quoc Tuan defeated them three times during the 13th century. * 1 điểm A. Because B. If C. Although D. However Question 24. Tet is an occasion for family _______ in Viet Nam. * 1 điểm A. visitings B. meetings C. reunions D. seeings Question 25. The Smiths have been to Nha Trang; ________, they have never been to Da Nang. * 1 điểm A. moreover B. although C. however D. so Question 26. Saint Giong was unable to talk, smile, or walk_______ he was three years old. * 1 điểm A . if B. because C. while D. even though Question 27. ______ spring comes, many Vietnamese villages prepare for a new festival season . * 1 điểm A. While B. When C. Nevertheless D. However Question 28. At school, the teachers and students _______ follow the rules. * 1 điểm A. has to B. have to C. must D. haven’t to Question 29. We don’t have many carnivals in Viet Nam; ____________ we have many traditional festivals. * 1 điểm A. nevertheless B. while C. although D. because Question 30. My dad doesn't mind............... my mom from work every day. * 1 điểm A. pick up B. picked up C. picking up D. picks up

Giải giúp mình đề đọc hiểu với ạ ??

Giải dùm mình bài 3 với ạ cần gấp lắm rồi

A). 2.(4x-3)-3(x+5)+4(x-10)=5.(x+2) B). 11/12-(2/5+x)=2/3.(6x+1)

Bạn nào làm được hết mình cho 60 đ

Bài 1:Tìm x,y thuộc Z,biết: a,(x-2).(y+1)=7 và x>y b,(x+1).(2y-3)=10 Bài 2:Tính hợp lí: a,(215+10-357)-(215-357) b,(-389+75)-(35-389+60) c,(-125).(-3).(-32).25 d,35.18-5.7.28 e,26.(-71)+6 mu 2.71 f,-7.(1-189)-189.71

Khi nào vât nhiễm điện âm , dương?