tim 1 so biet rang1/3 so do gap len 4 lan sau do cong voi 9 cuoi cung bot di 18 thi duoc ket qua la 11
Tong cua hai so la 45 tim hai so do biet rang neu giam so lon di 4 lan thi duoc so be?
tong cua 2 so tu nhien = 1884 tim 2 so do biet gap 5 lan so thu 1 roi cong so thu 2 thi duoc ket qua =6652
hieu cua 2 so la 738. tim hai so do , biet rang so thu nhat giam di 10 lan thi duoc so thu hai
tim so co ba chu so biet rang chu so hang don vi la 2va neu xoa di chu so 2 do thi duoc so moi gap 2 lan so co duoc khi xoa di chu so hang tram
tim so tu nhien co 2 chu so ,biet rang neu viet them chu so 0 xen giua chu so hang chuc va hang don vi cua so do ta duoc so moi gap 10 lan so can tim .Neu viet them chu so 1 vao ben trai so vua nhan duoc thi so do gap len 3 lan.
tong cua 2 so la 72. tim haiso do, biet rang neu so lon giam 5 lan thi duoc so be
Tong cua 2 so bang 91 .Tim 2 so do,biet rang neu giam di so lon 6 lan thi duoc so be
biet tong cua hai so la 64, neu gap so thu nhat len 6 lan va so thu hai gap 4 lan thi duoc tong moi la 356. Tim hieu hai so do?
