LSAT-Section-1-Logical-Reasoning Section One : Logical Reasoning - Practice Questions

Question 127

The six messages on an answering machine were each left by one of Fleure, Greta, Hildy, Liam, Pasquale, or Theodore, consistent with the following:

At most one person left more than one message.

No person left more than three messages.

If the first message is Hildy's, the last is Pasquale's.

If Greta left any message, Fleure and Pasquale did also.

If Fleure left any message, Pasquale and Theodore did also, all of Pasquale's preceding any of Theodore's. If Pasquale left any message, Hildy and Liam did also, all of Hildy's preceding any of Liam's If the only message Pasquale left is the fifth message, then which one of the following could be true?

Select an option, then click Submit answer.

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Hildy left the first message.
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Theodore left exactly two messages.
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Liam left exactly two messages.
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Liam left the second message.
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Fleure left the third and fourth messages.

Reference / correct answer:

Liam left exactly two messages.

A P in 5 means we’ll need to hear from H and L, with all the H’s before all the L’s. Since P’s only message is fifth, we can’t have an H in 1, since that would force a P in 6.

That kills option [Hildy left the first message.]., and after a little more thought, it kills options [Liam left the second message.] and [Fleure left the third and fourth messages.] as well. If an L is second, then an H is first, and we have the same problem. So [Liam left the second message.] is out. Similarly, if F is third and fourth, then we need a T

after we hear from P (Rule 5). So we’re looking at this scenario: __ __ F F P T.

But we still need to hear from H and L, in that order, and the only available positions are the first and second positions. We still can’t have H in 1, and so [Fleure left the third and fourth messages.] is impossible. Once you have it down to options [Theodore left exactly two messages.] and [Liam left exactly two messages], you only have to check one, although you could guess if you were running short of time. Let’s look at option [Theodore left exactly two messages.] first. If we hear from T twice, then we can’t put all the T’s after all the P’s, and so we can’t hear from either F or G (contrapositives of Rules 4 and 5). But now we don’t have enough messages! T leaves exactly 2, and P,H, and L leave exactly 1. That’s only 5 messages, soB.is impossible. So option [Liam left exactly two messages.] is correct. If L left two messages, the sequence F H L L P T works fine.

Question 128

Exactly five cars – Frank's, Marquitta's, Orlando's, Taishah's, and Vinquetta's – are washed, each exactly once. The cars are washed one at a time, with each receiving exactly one kind of wash: regular, super, or premium. The following conditions must apply:

The first car washed does not receive a super wash, though at least one car does.

Exactly one car receives a premium wash.

The second and third cars washed receive the same kind of wash as each other.

Neither Orlando's nor Taishah's is washed before Vinquetta's.

Marquitta's is washed before Frank's, but after Orlando's.

Marquitta's and the car washed immediately before Marquitta's receive regular washes.

Which one of the following could be an accurate list of the cars in the order in which they are washed, matched with type of wash received?

Select an option, then click Submit answer.

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Orlando's: premium; Vinquetta's: regular; Taishah's: regular; Marquitta's: regular; Frank's: super
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Vinquetta's: premium; Orlando's: regular; Taishah's: regular; Marquitta's: regular; Frank's: super
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Vinquetta's: regular; Marquitta's: regular; Taishah's: regular; Orlando's: super; Frank's: premium
places M before O, in defiance of Rule 5. Option [Vinquetta's: premium; Orlando's: regular; Taishah's: regular; Marquitta's: regular; Frank's: super] remains and is correct – and, incidentally, corresponds to Option 2 above.
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Vinquetta's: super; Orlando's: regular; Marquitta's: regular; Frank's: regular; Taishah's: super
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Vinquetta's: premium; Orlando's: regular; Marquitta's: regular; Frank's: regular; Taishah's: regular

Reference / correct answer:

Vinquetta's: premium; Orlando's: regular; Taishah's: regular; Marquitta's: regular; Frank's: super

A standard Acceptability question; we can use either the options listed above or the traditional Method for Acceptability questions. Since we’ll be using the options in the rest of the questions, let’s use the usual Training Method here for practice. We simply match the rules against the choices, eliminating those that don’t conform. Rule 1 kills [Vinquetta's: super; Orlando's: regular; Marquitta's: regular; Frank's: regular; Taishah's: super]., which gives the first car a super wash, and option [Vinquetta's: premium; Orlando's: regular; Marquitta's: regular; Frank's: regular; Taishah's: regular], which gives no car a super wash. Option [Vinquetta's: super; Orlando's: regular; Marquitta's: regular; Frank's: regular; Taishah's: super] violates Rule 2 as well, but no other choice conflicts with that one. All the choices conform to Rule 3, but option [Orlando's: premium; Vinquetta's: regular; Taishah's: regular; Marquitta's: regular; Frank's: super] disobeys Rule 4 by placing O before V. And

C. places M before O, in defiance of Rule 5. Option [Vinquetta's: premium; Orlando's: regular; Taishah's: regular; Marquitta's: regular; Frank's: super] remains and is correct – and, incidentally, corresponds to Option 2 above.

Question 129

Exactly five cars – Frank's, Marquitta's, Orlando's, Taishah's, and Vinquetta's – are washed, each exactly once. The cars are washed one at a time, with each receiving exactly one kind of wash: regular, super, or premium. The following conditions must apply:

The first car washed does not receive a super wash, though at least one car does.

Exactly one car receives a premium wash.

The second and third cars washed receive the same kind of wash as each other.

Neither Orlando's nor Taishah's is washed before Vinquetta's.

Marquitta's is washed before Frank's, but after Orlando's.

Marquitta's and the car washed immediately before Marquitta's receive regular washes.

If Vinquetta's car does not receive a premium wash, which one of the following must be true?

Select an option, then click Submit answer.

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Orlando's and Vinquetta's cars receive the same kind of wash as each other.
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Marquitta' s and Taishah' s cars receive the same kind of wash as each other.
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The fourth car washed receives a premium wash.
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Orlando's car is washed third.
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Marquitta's car is washed fourth.

LSAT-Section-1-Logical-Reasoning – Section One : Logical Reasoning