Question 1
Five persons E, B, D, A and C are sitting in a row facing North.
E sits at one of the extreme ends. B sits second to the right of E.
D sits immediately to the left of B. A is not at any extreme end.
Who sits at the other extreme end?
Solution Approach:
Step 1: Create the basic diagram
Draw 5 positions in a row, all facing North (β):
Position: 1 2 3 4 5
Step 2: Apply direct conditions
- E sits at one extreme end β Place E at position 1
- B sits second to the right of E β B at position 3
- D sits immediately to the left of B β D at position 2
Position: E D B _ _
Step 3: Apply constraint conditions
- A is not at any extreme end β remaining positions are 4 and 5; A cannot be at 5, so A at position 4
- Only C remains β C at position 5
Final Arrangement (all facing North β):
Position: E D B A C
Verification:
β E at extreme end (pos 1)
β B second to the right of E (pos 3)
β D immediately to the left of B (pos 2)
β A not at extreme end (pos 4)
Answer: C sits at the other extreme end (position 5).
Step 1: Create the basic diagram
Draw 5 positions in a row, all facing North (β):
Position: 1 2 3 4 5
Step 2: Apply direct conditions
- E sits at one extreme end β Place E at position 1
- B sits second to the right of E β B at position 3
- D sits immediately to the left of B β D at position 2
Position: E D B _ _
Step 3: Apply constraint conditions
- A is not at any extreme end β remaining positions are 4 and 5; A cannot be at 5, so A at position 4
- Only C remains β C at position 5
Final Arrangement (all facing North β):
Position: E D B A C
Verification:
β E at extreme end (pos 1)
β B second to the right of E (pos 3)
β D immediately to the left of B (pos 2)
β A not at extreme end (pos 4)
Answer: C sits at the other extreme end (position 5).