Find the missing number: ²/_√5, ³/₅, ⁴/_5√5, ⁵/₂₅, ?

42, 40, 38, 35, 33, 31, 28, ... choose which pair of numbers comes next?

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

36, 34, 30, 28, 24, ... What number should come next?

Find out the wrong term: 1, 5, 5, 9, 7, 11, 11, 15, 12, 17

What will come at the place of question mark ?<br>2, 7, 27, 107, 427, ?

3, 8, 13, 18, 23, 28, 33, ... choose which pair of numbers comes next?

Find out the wrong term: 5, 27, 61, 122, 213, 340, 509

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