Tong cua 2 so la so tu nhien bang 1092 . Neu o so hang thu nhat lan luot thay chu so hang don vi la 9 thanh 3 ,that chu so hang chuc la 7 thanh 1 thi duoc so hang thu hai .Tim hai so do ? ming cac ban giup minh giai bai toan nay nhe va nho co ca loi giai nha cac ban nhe ?

cho 4 so tu nhienco tong bang 2192.Neu xoa chu so hang don vi cua so thu nhat ta duoc so thu hai.Neu xoa chu so o hang don vi cua so thu hai ta duoc so thu ba.Neu xoa chu so o hang don vi cua so thu ba ta duoc so thu tu.Tim so thu nhat

tim so le co 4 chu so biet tong cac chu so do bang 26 tich cac chu so cua so do la so tron chuc va gia tricua so do ko thay doi khi doi cho chu so hang nghin cho chu so hang chuc chu so hang tram cho chu so hang don vi

                   giai giup minh nhe////co va loi giai luonne.......cam o

tim tat cac so tu nhien co ba chu so thoan man cac tinh chat sau : co tong cac chu so bang 9 chu so hang chuc lom hon chu so hang don vi la 2 don vi va neu ta doi chu so hang tram cho hang don vi thi duoc so moi lon hon so ban dau la 198 don vi

Hieu cua hai so la 42226 cac chu so hang tram hang chuc cua so lon deu la 8 va so nho deu la 6 Neu thay cac chu so bang cac chu so 0 thi duoc so moi gap 4 lan so be Tim 2 so do

tim so co ba chu so biet rang neu doi chu so hang tram va don vi cua no cho nhau thi gia tri cua no khong thay doi con chu so hang chuc bang mot phan ba tong hai chu so kia

Tim so co 3 chu so biet hieu cua chu so hang tram va hang don vi bang o,hieu cua chu so hang chuc va don vi bang 8

Tong cac chu so cua so tu nhien co 3 chu so la 12. Chu so hang chuc bang tong chu so hang tram va hang don vi. Neu doi vi tri chu so hang tram va hang don vi thi duoc so moi hon so cu la 396. Tim so ban dau.

                       (giải ra)

co bao nhieu so co ba chu so ma trong cac so do tong hai chu so o hang tram va hang chuc bang chu so hang don vi