tong cua 2 so bang 43,75 tim 2 so do biet rang neu so thu 1 gap 5 lan va giu nguyen so thu 2 thi duoc tong moi bang 124,95
Tim hai so biet tong cua hai so do la 102,1 neu so thu nhat gap Len 5 LAN va giu Nguyen so thu hai thi tong moi bang 329,3
tong cua 2 so la 3884.tim hai so dobiet rang neu gap so thu nhat len 4 lan va giu nguyen so thu hai thi duoc tong moi bang 9731
tong cua hai so thap phan bang 8,4.Tim hai so do, biet neu so thu nhat tang 4 lan va giu nguyen so thu hai thi tong moi la
1. Tim trung binh cong cua tat ca cac so tu nhien co 4 chu so khac nhau duoc viet boi bon chu so 0;3;5;7.Trung binh cong cua tat ca cac so do la?
2 .Tong cua 3 so bang 5,2. So thu nhat bang 2/3 so thu ba va so thu hai bang 50% so thu ba. Tim so thu hai?
3. Tim mot phan so co mau so bang 25 , biet rang neu cong tu so voi 34 va nhan mau so voi 3 thi duoc phan so moi bang phan so da cho. Tim phan so do?
4. Tim mot phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi bang 1, con neu giu nguyen tu so va cong them 3 thi ta duoc phan so moi bang 1/2 .Tim phan so do?
5. Hay cho biet co tat ca bao nhieu so co 3 chu so ma tong co chu so cua moi so bang 4 . co tat ca bao nhieu so thoa man?
tim 2 so biet tong cua 2 so do la 102,1. neu so thu nhat gap len 5 lan va giu nguyen so thu 2.thi tong moi bang 329,3
tong hai so la 406 neu gap so thu nhat len 5 lan va giu nguyen so thu hai thi duoc tong tong moi la 1062. tim so thu nhat
tong hai so la 406. neu gap so thu nhat len 5 lan va giu nguyen so thu hai thi duoc tong moi la 1062. Tim so thu nhat ?
tim hai so co tong bang 140 , biet rang neu gap so hang thu nhat len 5 lan va gap so hang thu hai len 3 lan thi tong moi la 508