1. I
2. L
3. L
4. I
5. L
6. I
7. I
8. I
9. L
Explanation:
1. Illogical
We can't conclude that Jazmin is from Junior's Town just by the fact she owns a bike. Because it doesn't say that ONLY people from Junior's Town own a bike. There must be someone else outside Junior's Town, in the world, that owns a bike. However, if she was from Junior's town, we could conclude she owns a bike.
2. Logical
The syllogism is true this time. Brandon congratulates every one of his friends when they get perfect scores. Kenneth is Brandon's friend and he got a perfect score. So, Brandon congratulated his friend for his perfect score. That doesn't mean that Brandon doesn't congratulate his friends on other occasions.
3. Logical
Zero brothers of Monica drive a car. That means if you're a brother of her,you have 0 chances of driving a car at this moment. Jensen is a brother of Monica, so he cannot drive a car.
4. Illogical
The first statement says MANY. Because of that, you cannot say the car accident was absolutely caused by drunk driving, because there are other causes for accidents, otherwise ALL accidents would be caused by drunk driving. You could say it "could have been caused by drunk driving"
. Plus technically, it's not sure the accident was a road accident, could have taken place in a parking.
5. Logical
The first statement includes an absolute component (nightly, meaning every night, ALL nights, etc). Then the second statement is related to the first one (8:30 PM), and the conclusion makes sense.
6. Illogical
The statements only relate Damian to Illac and Damian to Red. With the information provided, there's no way to make a conclusion for the relation between Iliac and Red. For example, Damian could weight 50 kg, Illac could weight 40 kg and Red 30 kg, and the statements would be true. But they would also be true if Illac was 30 kg and Red 40 kg. Yet, the conclusion would be different.
7. Illogical
There's nothing that says that Friday is a special occasion. If the first statement would have said "Students wear their class shirts on special occasions or on Fridays" or if the second statement would have said "Today is a special occasion, it's Friday", then yes it would have been true. But not as is.
8. Illogical
Since the first statement is using SOME... there's rarely a definitive conclusion you can make out of it... since it's not an absolute (ALL, NONE, ALWAYS, NEVER, etc). For the conclusion to be true, the first statement would have been something like "ONLY doctors like mainstream jazz", but then... what about mainstream jazz musician? They're all doctors too?
9. Logical
The first statement lists an absolute fact (ONLY), and the second statement is directly related to it (both are Mondays). So, the conclusion makes sense.
