Which sequences are geometric? Check all that apply.

10, 7.5, 5.625, 4.21875, …160, 40, 10, 2.5, …20, 70, 245, 857.5, …13, 16.5, 20, 23.5, …  5, 5.5, 6.05, 6.655, …16, 17.1, 18.2, 19.3, …

Answer:A,B,C,E