On each of exactly seven consecutive days (day 1 through day 7), a pet shop features exactly one of three breeds of kitten -- Himalayan, Manx, Siamese -- and exactly one of three breeds of puppy -- Greyhound, Newfoundland, Rottweiler. The following conditions must apply:Greyhounds are featured on day 1.No breed is featured on any two consecutive days.Any breed featured on day 1 is not featured on day 7.Himalayans are featured on exactly three days, but not on day 1. Rottweilers are not featured on day 7, nor on any day that features Himalayans.If Himalayans are not featured on day 7, then which one of the following pairs of days CANNOT feature both the same breed of kitten and the same breed of puppy?
Answer(s): B
Here's another opportunity to turn negatives into positives. If Himalayans are not on day 7 - and we know that they're not on day 1 - then there's only one way to insert the three h's, namely days 2, 4, and 6. Since the question involves both rows simultaneously, we should work with both:1234567m/sh___h___h___GN/R_________G/RN
On each of exactly seven consecutive days (day 1 through day 7), a pet shop features exactly one of three breeds of kitten -- Himalayan, Manx, Siamese -- and exactly one of three breeds of puppy -- Greyhound, Newfoundland, Rottweiler. The following conditions must apply:Greyhounds are featured on day 1.No breed is featured on any two consecutive days.Any breed featured on day 1 is not featured on day 7.Himalayans are featured on exactly three days, but not on day 1. Rottweilers are not featured on day 7, nor on any day that features Himalayans.Which one of the following could be true?
Answer(s): A
On each of exactly seven consecutive days (day 1 through day 7), a pet shop features exactly one of three breeds of kitten -- Himalayan, Manx, Siamese -- and exactly one of three breeds of puppy -- Greyhound, Newfoundland, Rottweiler. The following conditions must apply:Greyhounds are featured on day 1.No breed is featured on any two consecutive days.Any breed featured on day 1 is not featured on day 7.Himalayans are featured on exactly three days, but not on day 1. Rottweilers are not featured on day 7, nor on any day that features Himalayans.If Himalayans are not featured on day 7, which one of the following could be true?
Answer(s): D
We got the same if-clause and deduced that the Himalayans must occupy days 2, 4, and 6. Having drawn that out, let's try our choices. The right answer is possible, remember.F. ?1234567m/sh___h___h___GN/RG___GG/RN
There are exactly ten stores and no other buildings on Oak Street. On the north side of the street, from west to east, are stores 1, 3, 5, 7, and 9; on the south side of the street, also from west to east, are stores 2, 4, 6, 8, and 10. The stores on the north side are located directly across the street from those on the south side, facing each other in pairs, as follows: 1 and 2; 3 and 4; 5 and 6; 7 and 8; 9 and 10. Each store is decorated with lights in exactly one of the following colors: green, red, and yellow. The stores have been decorated with lights according to the following conditions:No store is decorated with lights of the same color as those of any store adjacent to it. No store is decorated with lights of the same color as those of the store directly across the street from it. Yellow lights decorate exactly one store on each side of the street.Red lights decorate store 4.Yellow lights decorate store 5.Suppose that yellow lights decorate exactly two stores, not just one, on the south side of the street and decorate exactly one store on the north side.If all of the other conditions remain the same, then which one of the following statements must be true?
The new "suppose" doesn't affect the north side, but it means we have to rethink the south. We need two yellows there. With stores 4 and 6 red and green respectively, and since we're still unable to have adjacent yellows, the two yellows will be stores 2 and 8, or 2 and 10. You may have started to draw all of this out, but it is to be hoped that you quickly saw that we have just deduced that option [Yellow lights decorate store 2.] is true. Option [Green lights decorate store 1.] is false, the others possible only.
Yuriko: Our city's campaign to persuade parents to have their children vaccinated ought to be imitated by your city. In the 16 months since the enactment of legislation authorizing the campaign, vaccinations in our city have increased by 30 percent. Susan: But the major part of that increase occurred in the first 6 months after that legislation was enacted, right after your city's free neighborhood health clinics opened, and before the vaccination campaign really got going.In responding to Yuriko, Susan does which one of the following?
We begin with a dialogue Method of Argument question, so we need to focus on how Susan responds. Yuriko recommends that Susan's city adopt her city's policy of talking parents into having their kids vaccinated because since making that a law, vaccinations have increased significantly. Not surprisingly, Susan's response begins with "But..." (you know, just once we'd like to see the respondent say "you're right; we'll do that!"--but we suppose that wouldn't make for much of a question), and Susan goes on to point out that most of that increase seems to be related to the opening of a free clinic and not so much to the vaccination campaign. So Susan essentially brings up a likely alternative cause of the increase that suggests that Yuriko's recommendation may not be so hot after all.
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