The song "Gone" is the sequel to Nelly's 2002 worldwide number one single that was a number one hit in how many countries ?
Gone (Nelly song):  Featuring additional lead vocals from American recording artist Kelly Rowland, "Gone" is the sequel to Nelly's 2002 worldwide number one single "Dilemma", also featuring Rowland. Dilemma (song):  It was a number-one hit in ten countries, including the United Kingdom, the United States and Australia, selling over 7.6 million copies worldwide, becoming one of the best selling singles of all time.
ten countries