tim hai so biet tong cua chung bang 324 va giam so lon di 5 lan thi duoc so be . Ly luan dau tien
Tong cua 2 so bang 91 .Tim 2 so do,biet rang neu giam di so lon 6 lan thi duoc so be
Tong cua hai so la 45 tim hai so do biet rang neu giam so lon di 4 lan thi duoc so be?
Tim hai so khi biet tong cua chung la 198 va neu xoa di chu so ben trai cua so lon thi duoc so be.Neu xoa chu so mot thi so do giam 100 don vi
tim tong cua hai so biet neu tang so lon len 735 don vi va giam o so be di357 don vi thi duoc tong moi la 2005
tong cua 2 so la 72. tim haiso do, biet rang neu so lon giam 5 lan thi duoc so be
Tong cua hai so bang 64.Tim hai so do.,biet rang neu so be gap len 3 lan thi duoc so lon
tim hai so co tong la 1149 biet rang neu giu nguyen so lon va gap doi so be len 3 lan thi ta duoc tong moi bang 2061
tim hai so biet so lon nhat co 3 chu so gap 9 lan so be va neu xao di chu so 4 on hang tram cua so lon thi duoc so so be