46.  5, 17, 37, 65, ? , 145

47.  ABCDE, BDAEC, DEBCA, ?

48.  Direction: In the following series, how many HIG occur in such a way that T' is in the middle and 'H' and 'G' are adjacent to it on both sides ? G G H I H I I G G J K L M G I H I G

49.  MNBA, OPDC, QRFE, ?

50.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . - abbaa - c - ad - aae -

51.  FNC, HQG, JTK, ?

52.  LMN, MNOP, NOPQR, ?

53.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . R_S_ PM_KSB_MRK_

54.  4, 11, 17, 22, ?, 29, 31, 32

55.  Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . c - bba - cab - ac - ab - ac

56.  Y, S, U, O,Q,??

57.  NZ, OY, PX, QW, RV, ?

58.  1, 2, 6, 24, ?, 720

59.  X, Q, K, F, ?

60.  Direction: Number of letters skipped in between adjacent letters in the series increases by one. Which of the following series observe the ruling given below?