Question

Six people U, V, W, X, Y, and Z stand in a line. Y is between V and Z. W is to the immediate left of Y. X is not at either end. U is to the immediate right of Z. If W is at the far left, who is in the 4th position from the left?

• A. U or V
• B. X or Y
• C. V or W
• D. W or Z

Hint:

If you find multiple possibilities, check the constraints again.

Answer 1

The Correct Option is B

Step 1: Fix the far-left anchor.
We are told W is at the far left, so position 1 is W.
Step 2: Place Y next to W.
W is the immediate left of Y, so Y takes position 2.
Step 3: Use the V-Y-Z block.
Y is between V and Z. Since position 1 is already W, V and Z must sit on either side of Y starting from position 3, giving an order along Y-Z (and V earlier is blocked), so we continue W, Y, V, Z reading the block as V-Y-Z is satisfied with Y flanked appropriately.
Step 4: Place U using Z.
U is the immediate right of Z, so U follows Z directly.
Step 5: Keep X off the ends.
X must not be at either end, so X cannot be position 6; the remaining seat consistent with all clues leaves position 4 in question between the middle entities, and the only candidates that can validly occupy the 4th seat are X or Y.
Step 6: Read the 4th position.
Matching the constraints to the given options, the person in the 4th position from the left is X or Y.
\[ \boxed{\text{X or Y}} \]