Question 1
Five friends A, B, C, D, and E are standing in a single row facing North. i) A 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) E is at one of the ends. v) D is to the immediate right of A. Who is standing at the left end?
From (i), A 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 E at the remaining end, position 5. Final order: B C A D E. Left end is B.