Discussion Forum



In this type of questions, some clues regarding seating or placing sequence (linear or circular) of some persons or items is given. The candidate is required to form the proper sequence using these clues and answer the given questions accordingly

1)

Seven people -A, B, C, D, E, F and G - are standing in a single file line, facing a booth. E is somewhere ahead of F. There is exactly one person standing between C and G. D is

immediately behind A. F is behind both B and D. If D and C are fourth and fifth in line respectively, then which of the following must be true?


A) A is first

B) B is first

C) F is sixth

D) F is seventh

Answer:

Option C

Explanation:

 D is immediately behind A i.e A, D.

D and C are fourth and fifth respectively ie  _,_, A, D, C, _, _'.

There is exactly one person between C and G i.e _, _, A, D, C, _, G.

F is behind B, D and E.So, F is between Q and G while the first two positions are taken by B and E.

Thus, the sequence becomes  B/E, B/E, A, D, C, F, G. Clearly, F is sixth in the line.