Carragher, looking ahead at City's next six games, claims they could score 30+ points in that period.
With a maximum of 18 points available, that would be something of a stretch.
Far more likely is Carra intending to say 13—which could have been picked up from four wins, a draw and a defeat.
But somehow bad maths keeps following Manchester City around this season.
Manager Manuel Pellegrini famously miscalculated how many goals his side would need to beat Bayern Munich by to qualify top of their Champions League group.
Thanks to Adrian Forde on Vine for spotting the clip.