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Seven people, A, B, C, L, X, Y and Z are sitting in a row, facing north. No one sits to the left of B. Only four people sit between B and Y. Only three people sit to the right of C. A sits to the immediate left of L. Z is not an immediate neighbour of C. Who sits at the rightmost end of the row?
X
Z
L
Y
Z
Since B is at the extreme left (no one sits to its left) and there are 4 people between B and Y, place B at position 1 and Y at position 6. Then fill C and the remaining people based on the constraints.
Since B is at the extreme left (no one sits to its left) and there are 4 people between B and Y, place B at position 1 and Y at position 6. Then fill C and the remaining people based on the constraints.
Establish Fixed Positions
With 7 seats (1-7): No one to the left of B means B is at position 1. Four people between B and Y (B _ _ _ _ Y) places Y at position 6.
Place C and A-L
C has 3 people to its right, so C must be at position 2 (since positions 4, 5, 6, 7 are to its right). A sits to the immediate left of L, which fits into positions 3 and 4.
Final Filling
Remaining people are Z and X. Z is not a neighbor of C (Pos 2), so Z cannot be Pos 3. Thus, Z takes Pos 5 and X takes the rightmost position (Pos 7).
A: Represents the position of Y, which is incorrect. C: Represents the position of C, which is incorrect. D: Represents the position of A, which is incorrect.
B is correct because following the seating constraints (B=1, C=2, A=3, L=4, Z=5, Y=6, X=7), X occupies the 7th and rightmost seat.
In row seating puzzles, always lock down the absolute anchors (like 'extreme left' or 'fixed count between') before placing relative neighbors.
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