Q19

[ManhattanPrepLSAT1]

I am really stuck just trying to figure out the set up on this one. Based on the setup, does that mean that the same swimmer on lap 1 is also on lap 6?

On question 19, I'm stuck between A and C. Neither one appear to violate any rules.

Other than figuring out that Ortiz can't swim lap 1, I can't figure out the rest of the swimmers for the first five laps.

I'm getting frustrated here. If I could get the diagram straight, I will be in good shape. Help!

[ManhattanPrepLSAT1]

I am really stuck just trying to figure out the set up on this one. Based on the setup, does that mean that the same swimmer on lap 1 is also on lap 6?

On question 19, I'm stuck between A and C. Neither one appear to violate any rules.

Other than figuring out that Ortiz can't swim lap 1, I can't figure out the rest of the swimmers for the first five laps.

I'm getting frustrated here. If I could get the diagram straight, I will be in good shape. Help!

Based on the setup, does that mean that the same swimmer on lap 1 is also on lap 6? Yes.

On question 19, I'm stuck between A and C. Neither one appear to violate any rules. Well, C violates the last rule which states that J is immediately after O.

[jeffshin720]

I have been trying to figure this question out for the longest time. I also got down to answer choices A and C. I really can't figure out which conditions either of them violates.

[timmydoeslsat]

These are the two choices that a majority of people will come down to on this one.

The rule that has not been used to eliminate any of the choices so far is the at least 1 OJ block.

As we can see from this game, we really have a 1-5, 1-5 repeat.

In other words,

1-5 will mirror 6-10. It is impossible for the 1-5 group to look different than the 6-10 group.

So when we look at how O and J can possibly form a block, A is our only way. They would form a block at the 5-6 spot.

With C, O and J will never be able to form that block.

[esthertan0310]

I use the criteria to eliminate wrong answer choices:

[*] Neither of Kruger's laps is immediately before either of Lu's

--> Find options that contain "Krugger, Lu" in the exact order, then eliminate those options
-->This eliminates option (E)

[*] Jacobson does not swim lap 9

--> It can be inferred that Jacobson does not swim lap 4 either.
--> Find options that mention "Jacobson" at the 4th lap, then eliminate those options
--> This eliminates option (B)

[*] Ortiz's first lap is after (but not necessarily immediately after) Miller's

--> M > O
--> Find options that mention "Ortiz" before "Miller", then eliminate them
--> This eliminates option (D)

Now we are left with options A and C

[*] At least one of Jacobson's lap is immediately after one of Ortiz's laps

--> O J
--> Find which option does not contain "Ortiz, Jacobson" in the exact order, then eliminate it.
--> This eliminates option (C)

Now we are left with option A, which is the correct answer.