"21 Questions" is a song performed by American rapper 50 Cent and Nate Dogg. The song was written by 50 Cent, K. Risto, J. Cameron, and V. Cameron for 50 Cent's commercial debut album Get Rich or Die Tryin' (2003). Released in 2003 as the album's second single, it became his second number one song in the United States, after "In Da Club". It reached #6 on the UK Singles Chart while "In Da Club" was at No. 23, giving him the rare feat of having two singles in the Top 30 at the same time.