Which of the following are exterior angles? Check all that apply

Which sequences are arithmetic? check all that apply. 1, 2, 3, 4, 5, . . 1, 3, 5, 7, 9, . . 1, 1, 2, 3, 5, 8, . . 256, 64, 16, 4, 1, . . 4, 7, 10, 13, 16, . .