8, 12, 9, 13, 10, 14, 11, ... choose which pair of numbers comes next?

34, 45, 56, 67, ....... What number should come next?

Find the missing term: 5, 6, 9, 15, ?, 40

Find the missing term: 1, 2, 3, 6, 9, 18, ?, 54

Find the missing term: 625, 5, 125, 25, 25, ?, 5

What will come at the place of question mark ?<br>2, 3, 6, 15, ?, 123

Find the missing term: 3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?

9, 11, 33, 13, 15, 33, 17, ... choose which pair of numbers comes next?

Find the missing term 6, 13, 28, 59, ?