31.  0, 7, 26, 63, 124, ?

32.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . a_b_ba_bba

33.  0.01, 0.04, 0.09, ?

34.  WVTSQPNMKJ ??

35.  1, 16, 81, 256, 625, ?

36.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . cb_cab_baca__cbaab

37.  CGK, FJN, IMQ, ?

38.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . a_baa_baa_ba

39.  6, 11, 21, 36, 56, ?

40.  31, 37, 49, 67, ?

41.  AEI, BFJ, CGK, ?

42.  68, 81, 96, ? , 132

43.  AE, FJ, ? , PT

44.  5, 16, 51, 158, ?

45.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . a - n - b- - ncb - -ncb