A person has some apple. If he devides all the apples into ten equal parts, there's one apple short. If he devides all the apples into nine equal parts, there's again one apple short. He continues the process until the 9th time and stops. What's the smallest number of possible apples that he has?

giúp............( có 2 trường hợp)

thực hiện phép tính sau: a.√(24+8√5) + √(9-4√5) b.√(17-12√2) + √(9+4√2) c.6-4√2 +22-12√2 giúp mình nha!!

Hồng hơn Huệ 16000₫. Nếu Hồng cho đi 5000₫ và Huệ cho 11000₫ thì cả 2 có tất cả là 70000. Hỏi lúc đầu mỗi bạn có bao nhiêu tiền ?

13.My father used to smoke too much but now he has ______ up a.given b. give c. to give d. giving 14.I enjoyed living in Lodon , but it didn’t really _______ up to my expectation a. living b. lived c. live d. to live 15.Please, _______ on what you are doing ! a. go b. turn c. get d. take 16. We don’t remember exactly when our parents started this workshop a. set on b. set up c. set out d. to set 17.We have to try harder so that our handicrafts can stay equal with theirs a. keep up with b.keep on with c. live up with d. live on 18. I want to watch the news so I ______ the TV a. turn up b. turn off c. turn on d. turn of 19.What time will you begin your journey to Da Lat? a.set off b. get up c. keep up with d. come over 20.We arranged to meet in front of the cinema but they didn’t arrive a. find out b. turn up c. go on d. switch off 21. The artisans in my village can earn enough money from sweater knitting to live a.live on b. live up to c. live with d. live at 22.They have to________ the museum because it’s no longer a place of interest. a.close down b. set off c.set up d. look forward to 23.Do you think we can ________selling silk scarves as souvenirs? a.live on b. go on c. live up d. get up 24.They are going to publish a guidebook to different beauty spots in Viet Nam a. bring to b. bring out c. bring up d. bring on 25.I’m thinking with pleasure about the weekend a. looking forward to b. excited c. fond of d. keen on 26.You have to read the instruction before making models a. look up b, look through c. look for d. look up 27. Who will take care of the baby when you go on bussiness? a. look after b. look up c. look for d. look through 28. What time did you come ________ from the trip last night? a. out b. back c. to d. over

Bài 1: Tìm 2 số biết hiệu của chúng bằng 38. Nếu thêm vào ST1 là 7 đơn vị thì ST1 sẽ gấp đôi ST2

chứng minh n^2+n+6 không chia hết chia hết cho 5

tính tổng: 2+4+6+....+500 nhanh lên nhé

một nền nhà hình chữ nhật có chu vi 30m,chiều dài hơn chiều rộng 5m.người ta lát các viên gạch hình vuông cạnh 50cm.a,tính diện tích nền nhà.b,tính số viên gạch cần dùng để lát nền nhà(biết rằng các mạch giữa các viên gạch không đáng kể)

tìm các số tìm nguyên x và y để thỏa mãn x/2 - y/2 =1/2