Which letter-cluster will replace the question mark (?) to complete the given series?

ACFD, CFHG, ?, GLLM, IONP

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

ROM, URJ, XUG, AXD, ?

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 25 * 5 * 10 * 2 * 8 *60

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
 A B Z _ P A B _ K P A B X K _ A B _ K P

Which letter cluster will replace the question mark (?) to complete the given series?
 ETRE, AZJG, WFBI, SLTK, ?

Directions: Study the following information carefully and answer the questions that follow:

Nine boxes A, B, C, D, E, F, G, H, and I are kept one above the other not necessarily in the same order. Three boxes are kept between A and B. Equal number of boxes are kept above and below A. Number of boxes kept above B is same as the number of boxes kept below C. Only two boxes are kept between C and I. One box is kept between A and G, which is not kept immediate above I. No box is kept between F and D,  which is not kept above F.  E is placed below H, which is kept immediate below D.

Which box is kept immediately below H?

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

        64 + 7 = 460

        43 + 8 = ?

        25 + 8 = 212

Direction: Study the following information carefully and answer the given questions.
Eight persons A, B, C, D, E, F, G, and H are seated in a linear row, some of them are facing North while others are facing South. H sits second to the left of E, who sits at an end of the row. D sits to the immediate right of A, who faces the South. C sits second to the left of D, who faces the same direction as E. H, who is not an immediate neigh bour of A, faces the opposite direction of E. F, who is not a neigh bour of E or H, faces the opposite direction of C. B faces the South. G sits second to the right of B. E and G face the same direction. C and D do not face the same direction. E and G does not sit adjacent to each other.

Who among the following sits fifth to the left of C?