1/X=1 (undivied) is an album by Wanna One, released in 2018. The album is a Cd+Bookkorean pop CD.

• 1 켜줘 (Light) 3:31
• 2 캥거루 (Kangaroo) (Prod. Zico) 3:45
• 3 영원+1 (Prod. Nell) 4:30
• 4 모래시계 (Prod. 헤이즈) 3:50
• 5 11 (Prod. 다이나믹듀오) 3:29