Các câu hỏi tương tự
HInh tren la phep cong ma cac so trong phep tinh do deu duoc ma hoa boi cac chu cai. Biet rang cac chu so giong nhau duoc ma hoa boi cung mot chu cai, nguoc lai, cac chu so khac nhau duoc ma hoa boi cac chu cai khac nhau. Hoi chu X la ma hoa ua chu so nao? Cần gấp lắm đấy!
X+X+YY=ZZZ
so be nhat co sau chu so ma chu so hang chuc la 5 va chu so hang tram la 3
tong cua 2 so la 16432 so lon la so co 5 chu so ma chu so hang cao nhat la 1 neu xoa bo chu so 1 do thi ta duoc so be tim 2 so
mot so co ba so ma chu so hang tram la 4 hoi chu so 4 ta dc so co 2 chu so . tong cua 2 chu so la 400 . tim 2 so
cho e la tap hop cac so tu nhien co hai chu so ma chu so hang chuc nho hon chu so hang don vi la 4
so phan tu cua e la
Có bao nhieu so co 2 chu so ma khong co co chu so 5 vay 71 la dung hay 72 la dung
so tu nhien be nhat ma tong cua cac chu so la 46 la so
tong cua 2 so la 432 . so lon nhat co 5 chu so ma chu so hang cao nhat la 1. neu xoa bo chu so 1 do thi duoc so be . tim 2 so do
Cac so co 6 chu so ma tong cac chu so bang 53 la cac so nao