tim hai chu so co tong 2 chu so bang 6 va hieu hai chu so cung bang 6
tim 2so co tong la so lon nhat co 1 chu so va hieu cua chung bang 5
Tim hai so co tong bang 10 va tích bang 21?
tim so be nhat co hai chu sokhac nhau va co tong cac chu so bang 13
co tat ca bao nhieu so co hai chu so ma tong hai chu so cua moi so do bang 8?
co tat ca bao nhieu so co hai chu so ma hieu hai chu so cua moi so do bang 6?
Tim mot so co hai chu so ma hai chu so do la hai so tu nhien lien tiep va co tong bang 13 ??
Tim so co 3 chu so biet hieu cua chu so hang tram va hang don vi bang o,hieu cua chu so hang chuc va don vi bang 8
tong cu hai so bang 15,hieu cua chung bang 1.tim hai so do
Tim so co ba chu soma hieu cua chu so hang tram va chu so hang chuc bang 0 con hieu cus chu so hang don vi bang 8
