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