Logic Rules : Inference and Replacement

1.

Fill in the Blank

1 min

1 pt

The science of correct reasoning is called

2.

Multiple Choice

30 sec

1 pt

An observation based on opinion or feelings.

subjective

objective

quantitative

qualitative

3.

Multiple Choice

30 sec

1 pt

An observation based on proven facts or data.

subjective

objective

quantitative

qualitative

4.

Multiple Choice

30 sec

1 pt

Logical interpretation of what you observe based on experience.

quantitative observation

qualitative observation

inference

prediction

5.

Multiple Choice

2 mins

1 pt

If I comb my hair, then I won't have tangles.

I have tangles.

Therefore, I didn't comb my hair.

Which law is being demonstrated?

Law of Detachment

Law of Syllogism

Law of Contrapositive

No law

6.

Multiple Choice

2 mins

1 pt

If I see a black bear, then I will scream.

If I scream, then the bear will run away.

Therefore, if I see a black bear, it will run away.

Which law is being demonstrated?

Law of Detachment

Law of Syllogism

Law of Contrapositive

No law

7.

Multiple Choice

2 mins

1 pt

If I go camping, then I need to pack my tent.

I went camping.

Therefore, I packed my tent.

Which law is being demonstrated?

Law of Detachment

Law of Syllogism

Law of Contrapositive

No law

8.

Multiple Choice

2 mins

1 pt

If you need help, then you stay after class.

If you stay after class, then you ask questions.

What is the logical conclusion?

Therefore, if you stay after class, then you need help.

Therefore, if you ask questions, then you need help.

Therefore, if you need help, then you ask questions.

There is no logical conclusion.

9.

Multiple Choice

2 mins

1 pt

If you go to the mall, then you will spend money.

You didn't spend any money today.

What is the logical conclusion?

Therefore, you didn't go to the mall.

Therefore, you don't have any money.

Therefore, you went to the mall.

There is no logical conclusion.

10.

Multiple Choice

2 mins

1 pt

What does Inference mean?

finding details in a story

Use clues and what you already know to come up with an idea

Giving a reason for your answer

Using what I know

11.

Multiple Choice

5 mins

1 pt

Using the Law of Syllogism, write a new conditional statement that follows from the pair of true statements.

If you study, then you will pass the test. If you pass the test, then you will pass the class.

If you study, then you will pass the class.

If you pass the test, then you should study.

If you pass the class, then you will pass the test.

If you study, then you will pass the test.

12.

Multiple Choice

2 mins

1 pt

All birds have wings

No humans have wings

Thus ..........................................

Birds and humans have wings

No humans are birds.

birds are humans

Birds and humans are different

13.

Multiple Choice

2 mins

1 pt

All men are mortal

Mr. Mark is a man

Therefore ........................................

Mr. Mark is a man

Men are like Mr. Mark

Mr. Mark is mortal

All men are mortal

14.

Multiple Choice

2 mins

1 pt

Determine whether the stated conclusion is valid.
Given: If an animal is a dog, then they like biscuits.
Sammy is a dog.
Conclusion: Sammy likes biscuits.

Invalid

Valid

Sammy is a Great Dane

Sammy is really a cat.

15.

Multiple Choice

5 mins

1 pt

Arshi and Amita are same in height, weight, hair texture, complexion. Both study philosophy in SIES college. Both live at Mulund in MIG colony. Both stay on the third floor of A wing. Arshi is a good singer and plays table tennis. Thus, Amita must be a good singer and plays table tennis.

Identify the argument.

Inductive

Deductive

Symbolic

Dont know

16.

Multiple Choice

2 mins

1 pt

Read this argument:

1 All black things are scary.

2 That cat is black.

____________________

C. That cat is scary.

This argument is valid.

This argument is invalid.

17.

Multiple Choice

2 mins

1 pt

Read this argument:

1 All spiders have eight legs.

2 Tom is a fish.

____________________

C. Tom has eight legs.

This argument is valid.

This argument is invalid.

18.

Multiple Choice

2 mins

1 pt

P1 : If I eat a donut, then I’ll feel guilty, but if I eat kale, then I will want a donut.

P2 : Either I eat a donut or kale.

C : Therefore, either I feel guilty or I want a donut.

Modus Ponens

Modus Tollens

Disjunctive Syllogism

Chain Argument

Constructive Dilemma

19.

Multiple Choice

2 mins

1 pt

P1- Either your food is spicy, or your food is mild.

P2- Your food is not spicy.

C- Therefore, your food is mild.

Modus Ponens

Modus Tollens

Disjunctive Syllogism

Chain Argument

Constructive Dilemma

20.

Multiple Choice

2 mins

1 pt

P1: If you go get gas, then you can drive your car.

P2: You cannot drive your car.

C: Therefore, you cannot go get gas.

Modus Ponens

Modus Tollens

Disjunctive Syllogism

Chain Argument

Constructive Dilemma

21.

Multiple Choice

2 mins

1 pt

State whether the argument below is valid or invalid. If it is invalid, give a reason why it is invalid.

If Joe eats greasy food, he will feel sick.

Joe does not feel sick.

Therefore, Joe did not eat greasy food.

valid

invalid, inverse error

invalid, converse error

22.

Multiple Select

2 mins

1 pt

Check all of the following that are logical "statements":

I love this song!

3 + 5 = 8

School was canceled yesterday.

Where did he come from?

Be careful what you wish for.

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