Box Stack 003C53
1. **Stating the problem:** We have eight boxes stacked one above the other: J, N, M, Q, L, K, O, P. We need to find which box is immediately above box P.
2. **Given conditions:**
- Box J is immediately above N.
- Three boxes are between M and N, with N above M.
- Two boxes are between M and Q.
- Four boxes are between L and K.
- Box O is below box P.
- No boxes are between Q and L.
3. **Step-by-step arrangement:**
- Since J is immediately above N, their positions are consecutive: J above N.
- N is above M with three boxes between them, so positions differ by 4.
- Two boxes between M and Q means positions differ by 3.
- No boxes between Q and L means Q and L are consecutive.
- Four boxes between L and K means positions differ by 5.
- O is below P.
4. **Assign positions from top (1) to bottom (8):**
Let’s try to place N and J first:
- Suppose N is at position $x$, then J is at $x-1$ (immediately above).
5. **N is above M with three boxes between:**
- So if N is at $x$, M is at $x+4$.
6. **Two boxes between M and Q:**
- So if M is at $x+4$, Q is at $x+7$ or $x+1$ (but $x+7$ exceeds 8, so $x+1$).
7. **No boxes between Q and L:**
- Q and L are consecutive, so if Q is at $x+1$, L is at $x$ or $x+2$.
8. **Four boxes between L and K:**
- Positions differ by 5.
9. **Try $x=3$:**
- N at 3, J at 2.
- M at 7 (3+4).
- Q at 4 (M at 7, two boxes between M and Q means positions differ by 3, so Q at 4).
- L at 5 (Q and L consecutive).
- K at 1 (L at 5, K at 1, difference 4, but need 5 boxes between, so difference 6, no).
10. **Try $x=2$:**
- N at 2, J at 1.
- M at 6.
- Q at 3 or 9 (9 invalid).
- Q at 3.
- L at 4.
- K at 8 (L at 4, K at 8, difference 4, need 5 boxes between, so difference 6, no).
11. **Try $x=1$:**
- N at 1, J at 0 (invalid).
12. **Try $x=4$:**
- N at 4, J at 3.
- M at 8.
- Q at 5 or 1.
- Q at 1 (since 5 would be between 8 and 5 is 3 boxes, but 8 is max).
- L at 2 (Q and L consecutive).
- K at 7 (L at 2, K at 7, difference 5, four boxes between).
13. **Positions so far:**
- 1: Q
- 2: L
- 3: J
- 4: N
- 5: ?
- 6: ?
- 7: K
- 8: M
14. **O is below P:**
- Remaining boxes: O, P
- Positions 5 and 6 left.
- Since O is below P, P must be at 5 and O at 6.
15. **Final stack from top (1) to bottom (8):**
Q, L, J, N, P, O, K, M
16. **Answer:** The box immediately above P (position 5) is N (position 4).
**Final answer: N**