user-avatar
dothanhviet82
1 năm trước
tìm một sô tự nhiên có ba chữ số sao cho tổng của hai chữ số bằng 17,chữ số hàng chục là 4 ,nếu đổi chỗ các chữ số hàng trăm và hàng đơn vị cho nhau thì số đó giảm đi 99 đơn vị giải giúp em với ạ
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

X. Read the passage and choose the correct answer Television is very popular and even has some benefits for kids. It helps very young children learn the letters of alphabets and helps other kids learn about science, cultures, and world events. However, researchers show that too much TV is bad for children. For one thing, there is a link between watching more than four hours of TV a day and being overweight. For another thing, many TV shows are violent and upsetting. Watching these shows may cause kids to be more fearful. And of course, more time in front of the TV means less time to study. Too much TV also be the cause of lower grades. Experts don’t agree on the solution to the problems. Some say that kids should watch only educational programs; others say kids should watch no TV at all. And others suggest teaching them to watch TV as occasional entertainment, not as an every day hobby. 1. What is the passage mainly about? A. Benefits of kids’ TV shows B. effects of TV on kids C. why kids love TV D. why kids shouldn’t watch TV 2. According to the passage, watching a lot of TV may ____ A. Cause weight problems in children C. cause children to be more famous B. Cause children to get better grades D. cause students to study more 3. The word “them” in paragraph 3 is closest in meaning to A. Programs B. experts C. kids D. problems 4. The word “occasional” in paragraph 3 is closest in meaning to A. Very often B. not very often C. always D. every day 5. What can be inferred from the passage? A. TV is always bad for children C. TV is only good for entertainment B. Kids should watch only educational shows D. television has some benefits along with problems

Câu 1. My uncle, _____ you met yesterday, is a lawyer. A. which B. whose C. what D. whom Câu 2. Dien Bien Phu is the place _____ our army won a resounding victory in 1954. A. that B. which C. where D. what Câu 3. All of us are waiting the man ______ son was lost. A. who B. whom C. whose D. which Câu 4. Peter works for a factory __________makes motorbikes. A. who B. whom C. which D. what Câu 5. There is one person to ___________ I owe more than I can say. A. whose B. whom C. that D. who Câu 6. What is the name of the girl _____________bicycle was stolen? A. who B. which C. when D. whose Câu 7. The children, _____________ parents work late, are taken home by bus. A. that B. their C. whom D. whose Câu 8. Dr. Sales is the person _____. A. in whom I don't have much confidence B. I don't have much confidence C. whom I don't have much confidence in him D. in that I don't have much confidence Câu 9. "Is this the address to ______ you want the package sent?" A. that B. whom C. where D. which Câu 10. He will take us to the town ______ we can see old temples. A. whom B. where C. when D. which

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team