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