Question

Six persons, A, B, C, D, E and F, live in six bungalows, three of which face North and three face South. The bungalows are named after six different flowers: Yarrow, Periwinkle, Rose, Orchid, Blue Star and White Primrose, not necessarily in that order. The following facts are known:
1. C lives in the Yarrow bungalow and faces South.
2. There is no bungalow to the left of White Primrose.
3. The bungalow of D is to the right of the bungalow opposite that of B.
4. The bungalow opposite C is Periwinkle.
5. The bungalow opposite B faces North and it is not Rose.
6. The Blue Star bungalow is to the immediate left of Rose, and it faces North.
7. E lives in a bungalow that is to the right of F.

Who lives to the immediate left of B?

• A. A
• B. C
• C. F
• D. D

Hint:

Remember that the South row's own sense of left runs the opposite way to the North row's, since the two rows face each other.

Answer 1

The Correct Option is A

Step 1: Set up the two rows.
Use a North facing row of positions N1, N2, N3 (left to right) and a South facing row of positions S1, S2, S3 (left to right), with Ni opposite Si. Clue 4 puts Periwinkle on the North side (opposite the South facing C), and clue 6 puts Blue Star and Rose on the North side too, next to each other. That fills the whole North row with Periwinkle, Blue Star and Rose, leaving Yarrow, Orchid and White Primrose for the South row.

Step 2: Fix the exact order in both rows.
White Primrose must have nothing to its left, which forces Periwinkle to sit at N1, otherwise it would clash with White Primrose's own leftmost South spot. So N1 = Periwinkle, N2 = Blue Star, N3 = Rose. C sits opposite Periwinkle, so C = S1 = Yarrow. The South row faces the opposite way to the North row, so its own leftmost bungalow is the one farthest from N1, that is S3. White Primrose goes there, and Orchid takes the middle slot, S2.

Step 3: Place B, D, then E, F and A.
From clue 5, the bungalow opposite B is not Rose (N3), so B is not at S3. Since S1 is already C, B must be at S2, the Orchid bungalow. From clue 3, D sits to the right of the bungalow opposite B, which is N2 (Blue Star), so D must be at N3, the Rose bungalow. The remaining people, A, E and F, fill N1 (Periwinkle), N2 (Blue Star) and S3 (White Primrose). Since clue 7 needs E to the right of F, and N1 sits left of N2 in the normal sense, F is at N1 and E is at N2, leaving A at S3, the White Primrose bungalow.

Step 4: Read off B's immediate left neighbour.
B sits at S2, in the South row. Because the South row faces the opposite way, its own sense of left runs from S3 towards S1, so the bungalow immediately to the left of S2, in the South row's own frame, is S3. S3 is White Primrose, occupied by A.

Final Answer:
A lives immediately to the left of B. \[ \boxed{\text{A}} \]