Question 1
Six persons T, Q, S, P, U and R are sitting in a row. Some are facing North and some are facing South.
T sits third from the left end facing North. Q sits second to the right of T and faces opposite direction.
S sits at the left extreme end facing South. P sits immediately to the left of Q facing North.
R sits at the right extreme end.
Who sits between S and T?
Solution Approach:
Step 1: Mark directions
↑ = North facing, ↓ = South facing
Step 2: Apply position-based conditions
- T sits third from the left end facing North (↑) → Position 3
- S sits at the left extreme end facing South (↓) → Position 1
Position: S(↓) _ T(↑) _ _ _
Step 3: Apply relative positioning
- Q sits second to the right of T (pos 3) → Position 5
- Q faces opposite direction to T (North) → Q faces South (↓)
- P sits immediately to the left of Q (pos 5) facing North (↑) → Position 4
Position: S(↓) _ T(↑) P(↑) Q(↓) _
Step 4: Fill remaining positions
Remaining persons: U, R
Position 2 gets U, Position 6 gets R
Final Arrangement:
Pos: S(↓) U(↑) T(↑) P(↑) Q(↓) R(↑)
Verification:
✓ T at pos 3, facing North
✓ Q at pos 5 (second right of T), facing South (opposite of T)
✓ S at pos 1 (left extreme), facing South
✓ P at pos 4 (immediately left of Q), facing North
Person between S (pos 1) and T (pos 3): pos 2 = U
Answer: U sits between S and T.
Step 1: Mark directions
↑ = North facing, ↓ = South facing
Step 2: Apply position-based conditions
- T sits third from the left end facing North (↑) → Position 3
- S sits at the left extreme end facing South (↓) → Position 1
Position: S(↓) _ T(↑) _ _ _
Step 3: Apply relative positioning
- Q sits second to the right of T (pos 3) → Position 5
- Q faces opposite direction to T (North) → Q faces South (↓)
- P sits immediately to the left of Q (pos 5) facing North (↑) → Position 4
Position: S(↓) _ T(↑) P(↑) Q(↓) _
Step 4: Fill remaining positions
Remaining persons: U, R
Position 2 gets U, Position 6 gets R
Final Arrangement:
Pos: S(↓) U(↑) T(↑) P(↑) Q(↓) R(↑)
Verification:
✓ T at pos 3, facing North
✓ Q at pos 5 (second right of T), facing South (opposite of T)
✓ S at pos 1 (left extreme), facing South
✓ P at pos 4 (immediately left of Q), facing North
Person between S (pos 1) and T (pos 3): pos 2 = U
Answer: U sits between S and T.