cho hai so co tong la 2008.tim hai so do biet giua chung co 17 so tu nhien khac
tim hai so tu nhien , biet tong cua chung bang 2015 va biet giua chung co 20 so tu nhien khac
tong hai so la 2014 . Tim so lon biet giua chung co 19 so tu nhien khac nhau
tim hai so tu nhien co tong la 2009/tim hai so do biet giua chung co 20 so chan
tong cua 2 so = 2009 biet giua chung co tat ca 50 so tu nhien khac tim 2 so do
Tong cua hai so tu nhien la 293 biet rang giua hai so co 25 so chan tim hai so do
tong hai so tu nhien bang 2014 .tim so lon biet giua hai so do co 19 so tu nhien khac
cho hai so tu nhien co tong bang 2014 . tim so lon biet giua chung co tat ca 39 so tu nhien khac
Tong hai so tu nhien bang 3013.Tim so lon ,biet giua hai so do co tat ca la 20 so tu nhien chan .Tim so do