Tích sau có tận cùng là chữ số nào? 9 x 19 x 29 x ….x 1999

Mọi người cho em xin lời giải câu này với ạ. Em cảm ơn mọi người nhiều

. Choose the most suitable word. 1. Recent pressure at work may………………… his strange behavior. A. look for B. account for C. ask for D. come in for 2. It’s time you stopped beating yourself…………………….over this. A. out B. off C. up D. down 3. They’ve had their kitchen ………………..in light wood and blue tiles. A. done off B. done in C. done with D. done out 4. I managed to……………………him by saying he could borrow my car on Saturday. A. get round B. get down C. get about D. get through 5. You’ll have to break the branches away to get…………….the thick forest. A. over B. along C. through D. back 6. We already ………………review financial contributions to the support group, because clearing the arrears to the IFIs is absolutely critical. A. keep under B. keep up C. keep on D. keep off 7. The police car pulled………………..the group of teenagers and told them to stop loitering. A. away B. up on C. up for D. up to 8. Brazil was……………….the game in the first half. A. running away with B. running up C. running down to D. running into 9. Her assistant met me at the entrance of the buildingand saw me……………….her office. A. through B. up to C. beyond D. about 10. It was impossible to………….the person directly in front of us in the snow storm. A. see to B. see of C. see beyond D. see over 11. The jet levelled………….at 10,000 feet. A. at B. off C. against D. with 12. I wanted my acceptance to Harvard to be a surprise, but I gave myself …………….when I mentioned about moving in the autumn. A. out B. up C. over D. away 13. I tried to pass for a local resident, but my accent gave me………….. A. back B. up C. away D. over 14. The guards at the border refused to let us……….. A. out B. down C. off D. through 15. These traditional stories have been…………from parent to child over many generations. A. passed over B. passed by C. passed down D. passed as 16. We all left………….eating and stood about with bowed heads. A. over B. aside C. in D. off 17. I wonder if the game will ever…………….young people? A. catch on with B. catch up with C. catch on to D. catch up in 18. They are unlikely to agree……………these plans unless the cost is reduced. A. to B. on C. with D. about 19. Dad would occasionally ………………….with an amusing comment. A. break off B. break out C. break up D. break in 20. His mother was chatting and didn’t notice that he had……. A. fallen through B. fallen over C. fallen behind D. fallen for

Giúo mik toàn bộ 5 bài trên nhé

giúppppppppppppppppppppppppppppppppppp

M=2-5+8-11+14-17+...+98-101 a)tính M b)viết dạng tổng quát số hạng n của M

Giải giúp mình với ạ. Giải theo cách tự luận nha. Mình cảm ơn.

Tìm m để hàm số đồng biến trên khoảng

làm hộ mình phần a,b với ạ. thanks

kể những việc làm tốt em đã làm trong mùa dịch covid-19 Viết bài văn(khoảng 2 trang giấy)