Sixteen individuals — A, B, C, E, N, O, P, Q, R, S, T, U, V, W, X, and Y — reside in two flats (Flat 1 and Flat 2) of a four-floor building. The floor...
Question
Sixteen individuals — A, B, C, E, N, O, P, Q, R, S, T, U, V, W, X, and Y — reside in two flats (Flat 1 and Flat 2) of a four-floor building. The floors are numbered 1 (lowest) to 4 (top). Flat 1 is to the west of Flat 2. Flat 1 on floor 2 is directly above Flat 1 on floor 1, and similarly for Flat 2. There are eight married couples, each couple living together on the same floor and flat. Names starting with a vowel indicate females, who live only on even-numbered floors. The following conditions apply:
- A lives directly above P’s spouse’s flat.
- A’s spouse lives in an odd-numbered flat.
- O and Q live on the same floor.
- T lives to the northeast of U and below E.
- Q and E do not live in the same flat.
- B lives on an even floor, two floors above N.
- S lives southwest of B but not below N.
- R lives north of X and is not married to A.
- X’s spouse lives east of Y.
- C is not married to Y or X.
- V and U live in the same flat and share the same gender.
- W and Q share the same gender.
Question: Four of the following five pairs are similar in a certain way and form a group. Which pair does NOT belong to this group?