Six participants — U, V, W, X, Y and Z — are sitting in two rows of three,…
20202020
Six participants — U, V, W, X, Y and Z — are sitting in two rows of three, with each person facing someone in the other row. X is second to the right of Z. W, who is a neighbour of Y, is sitting diagonally opposite X. V is a neighbour of Z. Y is not at the end of any row. If V and U interchange their positions, who would be the neighbours of U in the new position?
- A.
W and X
- B.
X and Y
- C.
Z and Y
- D.
Z and X
Attempted by 81 students.
Show answer & explanation
Correct answer: D
Step 1 — Build one row. "X is second to the right of Z" places Z and X at the two ends of the same row, with one seat between them. Since "V is a neighbour of Z", V takes that middle seat. So this row reads: Z – V – X.
Step 2 — Build the other row. "Y is not at the end of any row", so Y sits in the middle of the opposite row. "W is the neighbour of Y" and W is diagonally opposite X, so W takes the end of that row that lies diagonally across from X. The only person left, U, takes the remaining end. So this row reads: U – Y – W (or W – Y – U), with U opposite Z.
Step 3 — Apply the interchange. V and U swap seats. U moves into V's old middle seat, which sits between Z and X.
Therefore, after the swap, U's neighbours are Z and X, which is option 4.