Question 1
Five friends A, B, C, D, and E are standing in a single row facing North. i) B is exactly in the middle of the row. ii) D is not at any end. iii) E is to the immediate left of A. iv) C is at one of the ends. v) D is to the immediate right of B. Who is standing at the left end?
From (i), B is at position 3. From (v), D must be at position 4. (iii) places E and A as consecutive with E left of A at positions 1 and 2. (iv) puts C at the remaining end, position 5. Final order: E A B D C. Left end is E.