#15 - Local, Must Be True,

[Dave Killoran]

Complete Question Explanation
(The complete setup for this game can be found here: lsat/viewtopic.php?f=357&t=12842)

The correct answer choice is (C)

The conditions in the question stem create the following basic diagram:

G3-Q15-d1.png

From the second rule, the first bead cannot be R, the fifth bead cannot be Y or P, and the eighth bead cannot be R. From the third rule, the first bead cannot be O, and the eighth bead cannot be O:

G3-Q15-d2.png

At this point, many student move on to the answer choices, but do not forget that the last rule activates when a strand has eight beads, and this question stipulates that this strand has the magic eight beads. Thus, all of the colors must be used in the strand. A glance at the diagram shows that every color except O has been used, so O must appear somewhere among the eight beads. As O cannot be first or eighth, O must be fifth:

G3-Q15-d3.png

Accordingly, answer choice (C) is correct.