#12 - Local

[Administrator]

Complete Question Explanation

The correct answer choice is (A).

Answer choice (A): This is the correct answer choice.

Answer choice (B):

Answer choice (C):

Answer choice (D):

Answer choice (E):

This explanation is still in progress. Please post any questions below!

[jacob.howard.dorfman]

Can someone please explain how to arrive at the correct answer on this one. Why does R have to be displayed at all?

[Nikki Siclunov]

Hi jacob.howard.dorfman,

Thanks for the question!

The stem indicates that N, P and R are all selected, and asks us to determine what must be true as a result.

Thanks to the last rule, N must be displayed 5. Additionally, R must be either 1 or 6. This creates two local diagrams:

R __ __ __ N __ | L/M __

or

__ __ __ __ N R | L/M __

According to the second rule, if P O/S P S/O (block of 3). Clearly, this limits the placement of the block to positions 2-3-4 in the first solution above. However, P cannot be 3 thanks to the second and fourth rules: S must be adjacent to P, but cannot be either 2 or 4. Since P cannot be 3, the first solution (above) is impossible. Therefore, the second solution is the only possible - validating the correct answer choice (A).

Let me know if this helps!

Thanks!