Seven cars are parked in a row. The Red is to the left of the Blue, but right of the Green. The Yellow is at the right end. The Black is just left of the Yellow. The White is between Green and Red. The position of the Blue is

1. Yellow at position 7; Black at position 6 (just left of Yellow). 2. Green-White-Red form left-to-right block; Red is left of Blue. 3. Sequence becomes Green, White, Red, Blue, ?, Black, Yellow. 4. Blue ends up at the fifth position with the remaining color at fourth slot before Black. _Source: ICAI BoS Foundation Paper 3, Ch 11 'Seating', p.4_