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

Find out the wrong term: 5, 10, 40, 80, 320, 550, 2560

VI, 10, V, 11, __, 12, III. What number should fill the blank?

Find the missing term: 5760, 960, ?, 48, 16, 8

In a given series one term is wrong or missing term: 1, 5, 14, 30, 55, 93

Find out the wrong term: 445, 221, 109, 46, 25, 11, 4

Find the missing term: 120, 99, 80, 63, 48, ?

Sunday, Monday, Wednesday, Saturday, Wednesday, Monday, .....

53, 53, 40, 40, 27, 27, ... What number should come next?