Select the option for "?" that continues the pattern in each question.
(1.) 3, -6, 12, 4, 20, ?
(2.) 7, 16, 8, 27, 9, ?
(3.) 2, 7, 26, 101, 400, ?
(4.) 7, 21, 8, 72, 9, ?
(1.) 3, -6, 12, 4, 20, ?
(2.) 7, 16, 8, 27, 9, ?
(3.) 2, 7, 26, 101, 400, ?
(4.) 7, 21, 8, 72, 9, ?