Question: What is the song title sung by Sonu Nigam with lyricists of Dev Kohli/Biddu, and number over 8?
SQL: SELECT "Song Title" FROM "2-18704586-1" WHERE "Singer(s)" = 'Sonu Nigam' AND "Lyricist" = 'Dev Kohli/Biddu' AND "Number" > 8.0;

Question: Who was the singer for the song numbered 3, with lyricist Dev Kohli?
SQL: SELECT "Singer(s)" FROM "2-18704586-1" WHERE "Lyricist" = 'Dev Kohli' AND "Number" = 3.0;

Question: What is the average number for the song "O Sudha"?
SQL: SELECT AVG("Number") FROM "2-18704586-1" WHERE "Song Title" = 'O Sudha';

Question: What is the average length for the song "Ma Ke Jaisi"?
SQL: SELECT "Length" FROM "2-18704586-1" WHERE "Song Title" = 'Ma Ke Jaisi';