Find the missing term: 6, 13, 25, 51, 101. ?

1, 10, 7, 20, 13, 30, 19, ... choose which pair of numbers comes next?

Find out the wrong term: 3, 2, 8, 9, 13, 22, 18, 32, 23, 42

70, 71, 76, __, 81, 86, 70, 91. What number should fill the blank?

Find the missing term: 3, 10, 29, 66, 127, ?

Find out the wrong term: 196, 169, 144, 121, 101

Find the missing term: 8, 9, 8, 7, 10, 9, 6, 11, 10, ?, 12

Find the missing term :- 240, ?, 120, 40, 10, 2

40, 40, 31, 31, 22, 22, 13, ... choose which pair of numbers comes next?