tổng cua 2 so bang 5 lan so be hieu la 1983 tim so lon
tim hai so tu nhien biet tong va hieu cua chung lan luot la 200 va 48 tra loi so be nhat va so lon nhat
hieu cua 2 so bang 345. Tim 2 so do biet so lon la so chon chuc va neu so bi tru tang len 201 thi duoc so moi gap 8 lan so tru
hieu 2 so bang 2 lan so be tong 2 so la so lon nhat co 4 chu so kac nhâu tim so lon
hieu cua 2 so bang 2 lan so be .tong 2 so do la so lon nhat co 4 chu so khac nhau . tim so lon
tong cua hai so gap 3 lan hieu cua hai so. biet so be la 198 . tim so lon
Hieu cua hai so la 20.Tim hai so do biet
a, ti so cua hai so do la 6/2
b, So lon gap 3 lan so be
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
trong mot phep tru ,biet tong cua so bi tru,so tru va hieu bang 2000.tim so bi tru va so tru va so tru cua phep tinh do,biet rang so tru lon hon hieu la 200