1. "Your performance on this quiz will indicate a solid understanding of conditional arguments only if you get eight or more of the answers right." Which of the following makes a valid argument of that conditional premise?

You don't have a solid understanding. Therefore, you get eight or more answers right.

You get seven answers right. Therefore, your performance indicates a solid understanding.

You get seven answers right. Therefore, your performance indicates no solid understanding.

You don't have a solid understanding. Therefore, you get less than eight answers right.

2. "If Hakim finishes the assignment by Friday, he'll come to visit on Saturday or Sunday." Which of the following makes a valid argument of that conditional premise?

Hakim didn't visit on Sunday. Therefore, he didn't finish by Friday.

Hakim visited on Saturday and Sunday. Therefore, he finished by Friday.

Hakim finished by Friday, and didn't visit on Sunday. Therefore, he visited on Saturday.

Hakim finished by Friday, and visited on Sunday. Therefore, he didn't visit on Saturday.

3. "The last thing I expected was an A in Latin, because I'd only gotten a B on the midterm." Which of the following conditionals makes a valid argument of those two claims?

Expect an A in Latin if you get better than a B on the midterm.

Don't expect an A in Latin unless you get better than a B on the midterm.

If you get better than a B on the midterm, expect an A in Latin.

Don't expect an A in Latin only if you don't get better than a B on the midterm.

4. "The Republicans will win the election only if the economy improves and the Democrats attack each other." Which of the following makes a valid argument of that conditional premise?

The economy did not improve. Therefore, the Republicans did not win.

The economy improved. Therefore, the Republicans won.

The economy improved and the Democrats attacked each other. Therefore, the Republicans won.

The Republicans didn't win. Therefore, the economy didn't improve or the Democrats didn't attack each other.

5. "My car's is guaranteed for 7 years or 70,000 miles if I do all the required maintenance." Which of the following makes a valid argument of that conditional premise?

The car's gone over 70,000 miles, so I don't have to do the maintenance.

I missed some of the required maintenance, so the guarantee was invalidated.

They honored the guarantee, so I guess I did all of the maintenance.

The car's gone only 50,000, so the guarantee is still good.

6. Which of the following makes this a valid argument? "I love listening to baroque music only if it's played on authentic instruments, but I didn't love what we just heard because. . . ."

it wasn't baroque.

I wasn't listening.

it wasn't played well.

it wasn't played on authentic instruments.

7. "If Russia signs a treaty with Serbia, then Germany will sign one with Croatia. And if Croatia signs any treaties, it will ask to join NATO. But the U.S. will support Croatia's request to join NATO only if Russia signs no treaties with Serbia." Which of the following makes a valid argument with those premises?

Germany signs a treaty with Croatia. Therefore, Russia has signed a treaty with Serbia.

Russia has signed a treaty with Serbia. Therefore, Croatia has asked to join NATO.

The U.S. is supporting Croatia's request to join NATO. So Croatia must have asked to join NATO.

Croatia is asking to join NATO, so it must have signed at least one treaty.

8. "Water is scarce in California, so we won't be taking a trip this summer." With which of the following conditional chains would those two claims make a valid argumnt?

If water is scarce in California, then there are no good deals on vacations. And if there are no good deals on vacations, we can't afford one. And if we can't afford it, we won't be taking a trip this summer.

If water is scarce in California, then there are no good deals on vacations. And there are no good deals on vacations if we can't afford one. And if we can't afford it, we won't be taking a trip this summer.

If water is scarce in California, then there are no good deals on vacations. And if there are no good deals on vacations, we can't afford one. And we can't afford it if we won't be taking a trip this summer.

There are no good deals on vacations only if water is scarce in California. And if there are no good deals on vacations, we can't afford one. And if we can't afford it, we won't be taking a trip this summer.

9. The rule is, "You can graduate only if you have earned 120 or more credits, but you can apply for graduation if you have earned 90 or more credits." Which of the following is true for Pierre, who has earned 70 credits?

Pierre cannot graduate, and he cannot apply for graduation.

Pierre may be able to graduate, and he may be able to apply for graduation

Pierre may be able to graduate, but he cannot apply for graduation.

Pierre cannot graduate, but he may be apply to apply for graduation.

10. "San Jose State is a good choice for a university if you want to be a computer engineer, but only if you are willing to study hard." Which of these following creates a valid argument based on these premises?

You are willing to study hard, so you must want to be a computer engineer.

San Jose State is a good choice for a university, so you must want to be a computer engineer.

You aren't willing to study hard, so you must not want to be a computer engineer.

You don't want to be a computer engineer, so San Jose State isn't a good choice for a university.

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