V, VIII, XI, XIV, __, XX. What number should fill the blank?

Find the missing term: 9, 27, 31, 155, 161, 1127, ?

Find the missing term: 563, 647, 479, 815, ?

Find out the wrong term: 1, 3, 10, 21, 64, 129, 356, 777

6, 10, 14, 18, 22, 26, 30, ... choose which pair of numbers comes next?

7, 9, 66, 12, 14, 66, 17, ... choose which pair of numbers comes next?

In the following number series a wrong number is given. Find out the wrong number.<br /> 150, 450, 750, 1060,1350,…

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

Find the missing number:- 0.5, 0.55, 0.65, 0.8, ?