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

Find out the wrong term: 11, 5, 20, 12, 40, 26, 74, 54

Find out the wrong term: 125, 126, 124, 127, 123, 129

Find the missing term: 5, 6, 9, 15, ?, 40

2, 4, 6, 8, 10, ... What number should come next?

Find the missing term: 4, 6, 9, 13<sup>1</sup>/<sub>2</sub>, ?

What will come at the place of question mark ?<br>6, 13, 28, 59, ?, 249.

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

Find the missing term: 198, 194, 185, 169, ?