Persons X, Y, Z and Q live in Red, Green, Yellow or Blue coloured houses which are in sequence on a street. Z lives in a Yellow house. The Green house is adjacent to the Blue house. X does not live adjacent to Z. The Yellow house is immediately between the Green and Red houses.
The colour of the house X lives in is:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Blue
The colour order is fixed first from the clues about the houses, then the persons are placed.
Yellow is immediately between Green and Red: the three stand as Green, Yellow, Red (or Red, Yellow, Green).
Green is next to Blue: Blue must stand at Green’s free end, giving Blue, Green, Yellow, Red (or the same order reversed).
Z lives in the Yellow house, the third house.
X is not next to Z: the Green and Red houses are next to Yellow, so X lives in the Blue house.
