số lớn nhất có 3 chữ sô : 999
số lớn nhât có 2 chữ số : 99
sô lớn : ( 999 - 99 ) : 2 = 450
a + b = 999
a - b =99
=> a = (999 + 99) : 2 = 549
Vậy số lớn là 549
tong cua 2 so bang so lon nhat co 4 chu so. ti so giua hai so lon va so be bang so nho nhat co 2 chu so .tim hai so do
tim hieu cua hai so biet tong hai so lon nhat co ba chu so khac nhau va so be bang 1/2 so lon
Hieu 2 so bang 1/5 so be .Tong 2 so la so tron chuc lon nhat co 3 chu so .Tim so lon
Tong cua bon so tu nhien la so lon nhat co bay chu so. Neu xoa di chu so hang don vi cua so thu nhat thi duoc so thu hai. So thu ba bang hieu cua so thu nhat va so thu hai. So thu nhat la tich cua so be nhat co ba chu so va so lon nhat co bon chu so. Tim so thu tu.
Tim hieu 2 so biet tong 2 so la so lon nhat co 3 chu so khac nhau va so be bang 1/2 so lon
hieu cua 2 so bang 1/5 so be tong 2 so la so tron chuc lon nhat co ba chu so tim so
lon
HSG
Tong cua bon so tu nhien la so lon nhat co 7 chu so .Neu xoa di chu so hang don vi cua so 1 thi duoc so 2. so thu 3 bang hieu cua so 1 va so 2.so be nhat la tich cua so be nhat co ba chu so va so lon nhat co bon chu so .tim so thu 4
2: ban An co 170vien bi gom 2 loai :bi xanh va bi do .Ban An nhan thay 1/9 so bi xanh bang 1/8 so bi do .hoi ban An co bao nhieu bi moi loai
tim 2 so khi biet tong la 11992 biet hieu cua chung la hieu cua so lon nhat co bon chu so va so lon nhat co ba chu so.
Tong hai so la so lon nhat co hai chu so, hieu hai so la so be nhat co hai chu so. Tim hai so do
