co bao nhieu so tu nhien co ba chu so ma tong cac chu so bang 5
co tat ca bao nhieu so tu nhien co 2 chu so ma so do bang 7 la tong cac chu so cua no
phai can it nhat bao nhieu chu so 8 de tao thanh cac so co tong bang 1000
Hay cho biet co tat ca bao nhieu so tu nhien co 2 chu so ma so do bang 7 lan tong cac chu so cua no .
Hay cho biet co tat ca bao nhieu so tu nhien co 2 chu so ma so do bang 7 lan tong cac chu so cua no .
co bao nhieu so tu nhien co 5cs ma tong cac chu so cua moi so bang 3
hay cho biet co tat ca bao nhieu so tu nhien co hai chu so ma so do bang 7 lan tong cac chu so cua no
hay cho biet co tat ca bao nhieu so tu nhien co hai chu so ma so do bang 7 lan tong cac chu so cua no?(giai giup mk nha )thanks cac ban iu nhiu.
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?