LSAT PrepTest 43 Section 4 Question 21 Explanation | Logic Games

I didn't write the following blog post. It was already on the blog when I took over the URL. The following blog post may contain mistakes. -Steve

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Here’s a Logic Games question from the June 2004 LSAT.

Let’s try to eliminate a few choices by looking at the rules. The first rule says that F serves Y along with H and one other truck, so D and E are out (they would have F serving Y with too many other trucks). The third rule eliminates B, since S can’t serve all the buildings (that way, I won’t serve more than S). The third rule also eliminates E again. The next rule (T doesn’t serve Y) eliminates C, since it must serve Y if it’s going to serve all buildings. So now we’re down to A and we know A is correct.

This is a set-up that works with A, although there is no need for you to make this diagram; it’s just for instruction’s sake:

X: H I P T
Y:H I F
Z:.H I F S T