6 boys A, B, C, D, E and F are standing in a row facing North. A and B cannot be either at 1st or 2nd place. C and D will always be together and C must be at one of the ends. C does not have D to his right. Who is standing on the west end?
Answer & explanation
Correct answer: option 4
All the members are facing north
A and B cannot sit at first and second places
C does not have D to his right.
E or F standing on the west end.