Try a Sample Logic Game: Miscellaneous

Test 79, Game 4

There are exactly six computers—P, Q, R, S, T, and U—on a small network. Exactly one of those computers was infected by a virus from outside the network, and that virus was then transmitted between computers on the network. Each computer received the virus exactly once. The following pieces of information concerning the spread of the virus have been established:

No computer transmitted the virus to more than two other computers on the network.

S transmitted the virus to exactly one other computer on the network.

The computer that transmitted the virus to R also transmitted it to S.

Either R or T transmitted the virus to Q.

Either T or U transmitted the virus to P.

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There’s a sufficient vs. necessary flaw here. Basically, the argument goes like this: Diving headfirst into an industrial sausage grinder will kill you. Stepping in front of a San Francisco Muni train will also kill you. Jimbo recently died. But Jimbo didn’t step in front of a Muni train, therefore Jimbo must have dived headfirst into an industrial sausage grinder.

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Question 18
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Question 18

One possible route of the virus from the first computer in the network infected to Q is


A

from R to P to T to Q

B

from T to S to R to Q

C

from T to S to U to Q

D

from U to P to R to Q

E

from U to T to P to R to Q

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D
Question 19
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Question 19

Which one of the following could be the computer that was infected from outside the network?


A

P

B

Q

C

R

D

S

E

T

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E
Question 20
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Question 20

If T did not transmit the virus to any other computer on the network, which one of the following must be true?

A

P transmitted the virus to S.

B

Q transmitted the virus to R.

C

U transmitted the virus to S.

D

P did not transmit the virus to any other computer on the network.

E

R did not transmit the virus to any other computer on the network.

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A
Question 21
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Question 21

Any of the following computers could have transmitted the virus to two other computers on the network EXCEPT:

A

P

B

Q

C

R

D

T

E

U

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Question 22
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Question 22

The spread of the virus among the computers is completely determined if which one of the following is true?

A

R transmitted the virus to Q.

B

T transmitted the virus to Q.

C

T transmitted the virus to S.

D

U transmitted the virus to P.

E

U transmitted the virus to R.

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Question 23
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Question 23

If P is the only computer that transmitted the virus to two other computers on the network, which one of the following must be true?

A

S transmitted the virus to T.

B

T transmitted the virus to P.

C

Q did not transmit the virus to any other computer on the network.

D

R did not transmit the virus to any other computer on the network.

E

U did not transmit the virus to any other computer on the network.

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