6, 11, 21, 36, 56, (...)
(1) 42
(2) 51
(3) 81
(4) 91

Which fraction comes next in the sequence
1/2, 3/4, 5/8, 7/16, ?

1) 10 /17
2) 9 / 32
3) 11 /34
4) 12 /35

In the series 357, 363, 369, ..., what will be the 10th term ?
(1) 405
(2) 411
(3) 413
(4) 417

How many terms are there in the series 201, 208, 215, .... 369 ?
(1) 23
(2) 24
(3) 25
(4) 26