1, 2, 3, 5, 8, ?
20, 19, 17, ?, 10, 5
Look at this series: 7, 10, 8, 11, 9, 12, . . . What number should come next?
Look at this series: 201, 202, 204, 207, . . . What number should come next?
Look at this series: 36, 34, 30, 28, 24, . . . What number should come next?