by cyruswhittaker Mon Oct 25, 2010 5:46 pm
This game is a 3D Numbered Ordering game. We need to deal with the position, the planes, and the domestic/international characterstic of the plane.
The rules tie together nicely to allow for a useful sequencing chain:
PI--RD--QD
So only two planes are uncertain: S and T. We do not know if they are domestic or international. However, we do know that they are Getaway planes. As a result since Q is domestic, we can determine that both S and T depart before Q, by rules 6 and 5.
Thus, that means that Q MUST be last (an inference that is tested directly on number 16).
#17: We are given a condition: S departs third. I found it useful to draw out a quick skeleton diagram with the information we have: S in 3 and QD in 5. Notice there is only one space between S and Q and there are two spaces preceding S. Always be aware of the immediate limitations: a question in a game MUST address a point of limitation in some way. In this question, it turns out to be a space limitation. Choice (C) is thus correct. S can't depart before R and T. Again, there's only one other space between S and Q, so S could only depart before one of R and T at the most.