The game tells us that a developer is building 8 houses on a street. Houses 1, 3, 5, and 7 are on one side of the street and houses 2, 4, 6, and 8 are on the other side.
Each house is one of three styles: R, S, or T.
_ _ 1 2 _ _ 3 4 _ _ 5 6 _ _ 7 8
Now let's go through the rules.
Rule 1: Adjacent houses are of different styles.
This means that houses next to each other on the same side of the street (e.g. 1 and 3 or 6 and 8) cannot be of the same style. Therefore, we cannot have two of the same kind of house next to each other on either side of the street.
Rule 2: No S faces another S.
This means that houses facing each other (e.g. 1 and 2 or 5 and 6) cannot both be S.
Rule 3: Every R has at least one T adjacent to it.
This means that there cannot be an R that has S on both sides.
Rule 4: House 3 is an R.
Rule 5: House 6 is an S.
_ _ 1 2 R _ 3 4 T S 5 6 _ _ 7 8
House 5 must be T because two S cannot face one another and two R cannot be adjacent to one another.
Now let's go to the question stem. We are asked to select the house which cannot be a T.
The answer is immediately clear from our setup above. House 7 cannot be T because two T cannot be adjacent to one another and House 5 must be T. Therefore, answer choice (D) is correct.
Hope this is helpful! Please let us know if you have any further questions.
