56. 23 45 89 177 363 705
...Given below are three series I, II and III. Each series consist an odd one out number. Odd one out number in series I, II and III are 'P', 'Q' and 'R',...
0 2 6 12 20 ?
...3 25 173 1041 5201 20809
10 a ...
42 43 46 ...
299, 302, 308, 317, ?, 344
24, 12, 18, ?, 157.5, 708.75
35.25 71 146 296 624 1376
...315 146 267 ? 235 210
3, 4, 10, 33, 136, ?, 4116