tim hai so co le co tong la 212 va giua chung co 5 so chan khac
Tim hai so chan biet tong cua chung la 28 va va giua chung co 3 so chan khac.
tim hai so chan co tong la 1150,giua chung co 54 so chan khac
tim 2 so chan biet tong cua chung la 970 va giua chung co 17 so le khac
bai 1: tim 2 so biet tong cua chung la 2011 va biet giua chung co tat ca 9 so chan
bai 2:tim 2 so biet tong cua chung la 571 va biet giua chung co tat ca 18 so chan
hai so tu nhien co tong bang 2011 va giua chung co tat ca 9 so chan tim hai so do
hai so tu nhien co tong bang 2009 va giua chung co tat ca 5 so le
tim hai so tu nhien co tong cua chung bang 636 va giua chung co tat ca 11 so tu nhien khac
tim hai phan so biet tong cua bang 5/6 va hieu cua chung bang 1/6
tim hai phan so biet tong cua chung bang 17/20 va hieu cua chung bang 7/20
tim 2 so chan co tong bang 2012 . biet giua chung co tat ca 15 so chan khac
tim 2 so chan co tong bang 410 biet giua chung co 18 so chan khac nhau tim 2 do
tim hai so le biet tong cua chung la 1142 va biet giua chung co 54 so chan