Free LSAT Practice
LSAT Practice Test
LSAT Practice Test Videos
eBook: The Road to 180
Law School Top 100
LSAT Test Proctor
LSAT Logic Games
Apple App Store
Digital LSAT Simulator
Campus Rep Internship
Fee Waiver Scholarship
LSAT Test Dates
LSAT Message Board
September 2016 LSAT
If P is the only computer that transmitted the virus to two other computers on the network, which one of the followin...
on December 17 at 07:55PM
Why is C correct? Why is A incorrect?
on December 18 at 10:11PM
Hi Ryan, thanks for the question!
The idea is that if P is the only computer that transmits to two others, then it must transmit to both R and S. This is because R and S must get the virus from the same computer.
Then we have two options that can give the virus to P. This is computers T and U. We can create two diagrams. One in which T - P. One in which U - P.
So now we have the following:
T - P - R and S, (in this scenario, R must give the virus to Q because T cannot anymore. So R gives it to Q and S gives it to U)
U - P - R and S (in this scenario, S must give the virus to T because it cannot give it to the leftover Q. The remaining Q can receive the virus from R or T)
This gives us 3 diagrams to answer our question.
T - P - R - Q
- S - U
U - P - R - Q
- S - T
U - P - R
- S - T - Q
In all scenario, Q is last (answer choice C)
Answer choice A is incorrect because it is possible that S transmits the virus to U. (First diagram).
I hope this helps. Please let me know if you have any other questions!
Posting to the forum is only allowed for members with active accounts.