Six 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
The correct answer is Option (4) → E or F
The boys face North, so their right is the East end of the row and their left the West end. Places 1 to 6 are counted from the West end.
C is at one end with D next to him. If C stood at the West end, D would be on his right, which is not allowed, so C is at the East end (place 6) and D is at place 5
A and B cannot take places 1 and 2, so they take places 3 and 4
E and F are left for places 1 and 2, in either order
The clues do not fix the order of E and F, so the boy at the West end is E or F.