72, 76, 73, 77, 74, __, 75. What number should fill the blank?

16, 26, 56, 36, 46, 68, 56, ... choose which pair of numbers comes next?

84, 78, 72, 66, 60, 54, 48, ... choose which pair of numbers comes next?

20, 20, 17, 17, 14, 14, 11, ... choose which pair of numbers comes next?

61, 57, 50, 61, 43, 36, 61, ... choose which pair of numbers comes next?

7, 10, 8, 11, 9, 12, ... What number should come next?

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

17, 32, 19, 29, 21, 26, 23, ... choose which pair of numbers comes next?

Find the missing term : 3, 5, 35, 10, 12, 35, _ , _