Abby, Billy, Carrie, and Dill need to line up. If Abbie is not last, Billy comes right before Carrie, and Dill is before Abbie, who is 3rd in line?
So... when Abby, , Carrie, and Dill are lining up Abby is not last and Dill comes before Abby so that means Abby can be in the 2nd or 3rd position BUT when it says comes before carrier that means is either in the 1st position or in the 3rd position but when he is in the 1st position Abby is in the last position so has to be the third person in line.
So... when Abby, , Carrie, and Dill are lining up Abby is not last and Dill comes before Abby so that means Abby can be in the 2nd or 3rd position BUT when it says comes before carrier that means is either in the 1st position or in the 3rd position but when he is in the 1st position Abby is in the last position so has to be the third person in line.