Find out the wrong term: 1236, 2346, 3456, 4566, 5686

34, 30, 26, 22, 18, 14, 10, ... choose which pair of numbers comes next?

Find the missing term: 589654237, 89654237, 8965423, 965423, ?

15, __, 27, 27, 39, 39. What number should fill the blank?

Find the missing term: 2, 1, 2, 4, 4, 5, 6, 7, 8, 8, 10, 11, ?

13, 29, 15, 26, 17, 23, 19, ... choose which pair of numbers comes next?

Find the missing term : 1, 0, 3, 2, 5, 6, ?, 12, 9, 20

Find the missing term: 7, 26, 63, 124, 215, 342, ?

Find the missing term: 2, 9, 28, ?, 126, 126, 217, 344