Seven boxes, U, V, O, P, Q, R and S, are kept one over the other but not necessarily in the same order. Q is kept second from the top. Only two boxes are kept between Q and R. S is kept immediately below Q. Only one box is kept between P and S. V is kept immediately above U. Which box is third from the top?

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Question

RRB ALP - 2025

Seven boxes, U, V, O, P, Q, R and S, are kept one over the other but not necessarily in the same order. Q is kept second from the top. Only two boxes are kept between Q and R. S is kept immediately below Q. Only one box is kept between P and S. V is kept immediately above U. Which box is third from the top?

This question was previously asked in

RRB ALP 2025 CBT 2 Mechanic Motor Vehicle Question Paper (28-Jul-2026) (Shift 1)

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The correct answer is

The problem requires arranging seven boxes (U, V, O, P, Q, R, S) in a vertical stack and finding the box third from the top.

Arrangement Steps

Q's Position: Q is second from the top.
1: _
2: Q
3: _
4: _
5: _
6: _
7: _
S's Position: S is immediately below Q.
1: _
2: Q
3: S
4: _
5: _
6: _
7: _
R's Position: Two boxes are between Q and R. Given Q is at 2 and S is at 3, the arrangement must be Q, S, Box(4), R(5).
1: _
2: Q
3: S
4: _
5: R
6: _
7: _
P's Position: One box is between P and S. S is at 3. P cannot be at 2 (occupied by Q). Therefore, P must be at 4.
1: _
2: Q
3: S
4: P
5: R
6: _
7: _
V and U's Position: V is immediately above U. The empty slots are 1, 6, and 7. V and U must occupy adjacent slots, so they fill slots 6 and 7. V is at 6, and U is at 7.
1: _
2: Q
3: S
4: P
5: R
6: V
7: U
O's Position: The only remaining box is O, which fills the last empty slot at position 1.
1: O
2: Q
3: S
4: P
5: R
6: V
7: U

Final Arrangement Check

The final order from top (1) to bottom (7) is O, Q, S, P, R, V, U.

Identify Box Third from Top

The box at the third position from the top is S.

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