In six houses numbered 1 to 6: X lives in an odd-numbered house above W; Z lives between W and Y; Y does not live in an even-numbered house; V lives in the topmost house.
Who lives in House Number 4?
Show answer & explanation
Correct answer: B
Explanation
Houses = 1 to 6 (from bottom to top)
V is at the very top ⇒ House 6
Y is not on an even-numbered floor ⇒ Y ∈ {1, 3, 5}
Z is between W and Y
X is on an odd-numbered floor above W
W must be positioned such that there is an odd-numbered floor above it ⇒ W = 2 (with 3 above it)
X = 3
Now Y ∈ {1, 5}
Z is between W and Y ⇒ W = 2, Y = 5 ⇒ Z = 3 or 4
But X is at position 3 ⇒ Z = 4