Persons X, Y, Z and Q live in Red, Green, Yellow and Blue coloured houses which are in a 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 in 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 houses stand in one row, so the colours are fixed first and the persons placed afterwards.
The yellow house is between the green and red houses, so these three stand together as Green, Yellow, Red (or Red, Yellow, Green).
The green house is next to the blue one, so Blue stands at the green end: the order is Blue, Green, Yellow, Red or its reverse.
Z lives in the yellow house, and its neighbours are the green and red houses.
X is not next to Z, so X cannot be in the green or the red house. The only house left for X is the blue one.
