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Worksheets

Rules of Inference

Total questions: 64

Worksheet time: 1hrs 26mins

Name
Class
Date
1.

What is the name of the following format of logical argument?

If A, then B.

A.

Therefore B.

a)

Modus Ponens

b)

Modus Tollens

c)

Law of Syllogism

d)

Disjunctive Syllogism

2.

What is the name of the following format of logical argument?

If A, then B.

Not A.

Therefore not B.

a)

Modus Ponens

b)

Modus Tollens

c)

Law of Syllogism

d)

Disjunctive Syllogism

3.

What is the name of the following format of logical argument?

If A, then B.

If B, then C

Therefore, if A then C.

a)

Modus Ponens

b)

Modus Tollens

c)

Law of Syllogism

d)

Disjunctive Syllogism

4.

P1: If I am happy, then I smile.

P2: I am not smiling.

C: Therefore I am not happy.

a)

Modus Ponens

b)

Modus Tollens

c)

Disjunctive Syllogism

d)

Chain Argument

e)

Constructive Dilemma

5.

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.

a)

Modus Ponens

b)

Modus Tollens

c)

Disjunctive Syllogism

d)

Chain Argument

e)

Constructive Dilemma

6.

P1: If you're sick, then you must stay home.

P2: You're sick.

C: Therefore, you must stay home.

a)

Modus Ponens

b)

Modus Tollens

c)

Disjunctive Syllogism

d)

Chain Argument

e)

Constructive Dilemma

7.

P1: If Eagles are birds, then Eagles fly.

P2: Eagles are birds.

C: Therefore, eagles fly

a)

Modus Ponens

b)

Modus Tollens

c)

Disjunctive Syllogism

d)

Chain Argument

e)

Constructive Dilemma

8.
Draw a conclusion from the statement.
If you live in Orlando, then you live in Florida.
You live in Orlando.
a)
You live in Disney Land
b)
You are an old person.
c)
You live in Florida
d)
You live in Orlando
9.
Draw a conclusion from the statement.
If a whole number is even, then its square is divisible by 4.
The number I am thinking of is an even number.
a)
Then it's not odd.
b)
Then it's a whole number.
c)
Then its square is divisible by 4
d)
Then it's even.
10.
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.
a)
Invalid
b)
Valid
c)
Sammy is a Great Dane
d)
Sammy is really a cat.
11.

If possible, use the Law of Detachment to draw a conclusion from the two given statements. If not possible, write not possible.

Conditional: If x = 2, then 2x – 10 = –6.

Premise: x = 2

a)

2x – 10 = –6

b)

If 2x – 10 = –6, then x = 2

c)

x = 2

d)

not possible

12.

If possible, use the Law of Detachment to draw a conclusion from the two given statements. If not possible, write not possible.

Conditional: If two lines do not intersect, then they are coplanar and parallel, or skew.

Premise: Lines AB and CD do not intersect.

a)

Lines AB and CD are parallel and not coplanar.

b)

Lines AB and CD are skew.

c)

Lines AB and CD are parallel and coplanar or they are skew.

d)

No Conclusion can be made.

13.

If possible, use the Law of Detachment to draw a conclusion from the two given statements. If not possible, write not possible.

Conditional: If points lie on a line, then they are collinear.

Premise: Points X, Y, and Z are in line m.

a)

They are not collinear.

b)

They are collinear.

c)

They are points.

d)

No conclusion can be made.

14.

Use the Law of Detachment to draw a conclusion from the two given statements. If not possible, write not possible.

Conditional: If Jack goes to school, then it is Monday.

Premise: Jack doesn't go to school.

a)

Jack skipped school.

b)

It isn't Monday.

c)

It's Saturday.

d)

Not Possible

15.
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.
a)
Invalid
b)
Valid
c)
Sammy is a Great Dane
d)
Sammy is really a cat.
16.

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?

a)

Law of Detachment

b)

Law of Syllogism

c)

Law of Contrapositive

d)

No law

17.

If my team wins the game, then they will be the champions.

My team is the champion.

Therefore, my team won the game.


Which law is being demonstrated?

a)

Law of Detachment

b)

Law of Syllogism

c)

Law of Contrapositive

d)

No law

18.

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

You didn't spend any money today.


What is the logical conclusion?

a)

Therefore, you didn't go to the mall.

b)

Therefore, you don't have any money.

c)

Therefore, you went to the mall.

d)

There is no logical conclusion.

19.

If you don't feel well, then you stay home.

You feel well.


What is the logical conclusion?

a)

Therefore, you stay home.

b)

Therefore, you don't stay home.

c)

Therefore, you don't feel well.

d)

There is no logical conclusion.

20.

How do you feel about the Laws of Logic now?

a)

Great! I am ready to take a test!

b)

Ok. I need to study my notes a bit more before I test.

c)

Not good. I need to practice more and maybe even come to Flex. But I will retake this quiz before next class.

21.

Identify the rule used in each of the following arguments: 

A1: If you are a worthy, then you can lift the hammer.

A2: You cannot lift the hammer.

Conclusion: You are not worthy.

a)

Resolution

b)

Modus Tollens

c)

Conjunction

d)

Addition

22.

Identify the rule used in each of the following arguments: 

A1: If you are a fan of Marvel, then you should watch Doctor Strange in the Multiverse of Madness.

A2: I am from Nueva Ecija.

Conclusion: If you are a fan of Marvel, then you should watch Doctor Strange in the Multiverse of Madness and I am from Nueva Ecija.

a)

Resolution

b)

Disjunctive Syllogism

c)

Addition

d)

Conjunction

23.

Identify the rule used in each of the following arguments:

A1: The number x is a prime number and is also even.

Conclusion: The number x is a prime number.

a)

Conjunction

b)

Addition

c)

Simplification

d)

None of the above

24.

Identify all of the rules that are used in each of the following arguments:

A1: P (Q  R)A1:\ P\ \rightarrow\left(Q\ \vee\ R\right)  

A2: PA2:\ P  

A3: ¬RA3:\ \neg R  

Conclusion: QConclusion:\ Q  

I. Modus Ponens

II. Addition

III. Simplification

IV. Conjunction

V. Modus Tollens

VI. Hypothetical Syllogism

VII. Disjunctive Syllogism

VIII. Resolution

a)

I and II

b)

I and IV

c)

I and V

d)

I and VII

25.

Identify all of the rules that are used in each of the following arguments:

A1: P  QA1:\ P\ \wedge\ Q   

A2: PRA2:\ P\rightarrow R  

  Conclusion: RConclusion:\ R  

 

 

I. Modus Ponens

II. Addition

III. Simplification

IV. Conjunction

V. Modus Tollens

VI. Hypothetical Syllogism

VII. Disjunctive Syllogism

VIII. Resolution

a)

IV and V

b)

V and VI

c)

I and III

d)

I, II and III

26.

Identify all of the rules that are used in each of the following arguments:

A1: (P  Q)  (R  S) A1:\ \left(P\ \rightarrow\ Q\right)\ \vee\ \left(R\ \rightarrow\ S\right)\    

  A2: ¬(P  Q) (W)A2:\ \neg\left(P\ \rightarrow\ Q\right)\vee\ \left(W\right)  

A3: ¬WA3:\ \neg W  

A4: ¬SA4:\ \neg S  

Conclusion: ¬RConclusion:\ \neg R  

  

 

 

I. Modus Ponens

II. Addition

III. Simplification

IV. Conjunction

V. Modus Tollens

VI. Hypothetical Syllogism

VII. Disjunctive Syllogism

VIII. Resolution

a)

V, VII and VIII

b)

I, II and IV

c)

III, IV and VIII

d)

None of the above

27.

Identify all of the rules that are used in each of the following arguments:

   A1: You are a good personA1:\ You\ are\ a\ good\ person   

A2: You love your parents very muchA2:\ You\ love\ your\ parents\ very\ much  

A3: If you are a good person and loves your parents very much, then you will have a happy lifeA3:\ If\ you\ are\ a\ good\ person\ and\ loves\ your\ parents\ very\ much,\ then\ you\ will\ have\ a\ happy\ life  

 

  

 

 

I. Modus Ponens

II. Addition

III. Simplification

IV. Conjunction

V. Modus Tollens

VI. Hypothetical Syllogism

VII. Disjunctive Syllogism

VIII. Resolution

a)

I and II

b)

I and III

c)

I and IV

d)

II and V

28.

Identify all of the rules that are used in each of the following arguments:

    

  A1: He likes Math and ScienceA1:\ He\ likes\ Math\ and\ Science  

  A2: He is from MarsA2:\ He\ is\ from\ Mars  

  A3: If he likes Math and is from Mars, then he is an alienA3:\ If\ he\ likes\ Math\ and\ is\ from\ Mars,\ then\ he\ is\ an\ alien  

   Conclusion: He is an alien.Conclusion:\ He\ is\ an\ alien.  

 

 

I. Modus Ponens

II. Addition

III. Simplification

IV. Conjunction

V. Modus Tollens

VI. Hypothetical Syllogism

VII. Disjunctive Syllogism

VIII. Resolution

a)

I and III

b)

II and III

c)

I, III and IV

d)

I, II, III and V

29.

Statement:

Some ketchup is kissan.

Some ketchup is tops.

No jam is ketchup.

Conclusion

I. Some kissans are tops.

ll. Some tops are ketchup.

lIl. Some jams are kissan.

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements.

30.

Statement:

Only a few Noise are Train

All Train are Eye

Only a few Eye are Music

Conclusion:

I:All Music can be Train

ll: No Noise is music

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements

d)

None of the conclusions can be drawn from the given statements.

31.

Statement:

Some studio are hall

All hall are room

Only room is bag

Conclusion:

I. Some bag are hall

ll. Some studio are room

Ill. All Studio can be hall

a)

If only conclusion 1 can be drawn from the given statements

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements.

32.

Statement:

Some squares are circles.

No circle is a triangle.

No line is a square

Conclusion

I. No triangle is a square.

ll. No line is a circle.

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements

d)

None of the conclusions can be drawn from the given statements

33.

Statement:

All Petrol is Diesel

No Diesel is CNG

No CNG is LPG

Conclusion

I: All LPG can be Petrol

ll: Some Diesel are not LPG

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements.

34.

Statement:

All songs are poems.

All poems are rhymes.

No rhyme is paragraph.

Conclusion:

I. All rhymes are poems.

ll. All Songs are rhymes.

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements.

35.

Statement:

Some boys are Students

Some students are girls

No girl is a boy

Conclusion:

I. All boys being girls is a possibility

Il. All girls being boys is a possibility

Ill. Some boys are girls

a)

If only conclusion 1 can be drawn from the given statements

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements.

36.

.Statement:

Some A are B

Some B are D

Some Care A

Conclusion:

I. Some C are B

ll. Some D are not A

lll. No B is C

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements.

37.

Statement:

Some stools are buns.

No bun is a globe.

All globes are hugs

Conclusion:

I. Some hugs are stools.

ll. Some globes are stools.

Ill. No hug is a stool.

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

38.

Statement:

Some lakers are swans.

Some swans are wells.

Some wells are screens.

Conclusion:

I. Some screens are swans.

ll. Some wells are lakers.

Ill. Some screens are lakers

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

39.

Statement:

All flaps are fingers.

All fingers are bails.

All bails are yens

Conclusion:

I. Some yens are fingers.

ll. Some bails are flaps.

Ill. Some yens are flaps

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

40.

Statement:

All sinks are links.

All links are barns.

Some barns are oranges.

Conclusion:

I. Some oranges are links.

ll. Some barns are sinks.

Ill. Some oranges are sinks

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

41.

Statement:

Only a few debits are credits.

A few credits are cash.

Conclusion:

I. Some cash are definitely not debits.

Il. All debits being cash is a possibility.

Ill. All debits being credits is a possibility.

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

42.

Statement:

Only a few volumes are display.

Only a few screens are volumes

Conclusion:

I. Some screens are definitely not display.

ll. All display being screens is a possibility

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

All conclusions can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

43.

Statement:

Only a few corners are nooks.

No nook is an edge.

No edge is a hole.

Conclusion:

I. All holes can never be corners.

Il. At least some nooks are holes.

Ill. Some edges can be corners.

a)

If only conclusion 1 can be drawn from the given statements.

b)

If only conclusion 2 can be drawn from the given statements.

c)

If only conclusion 3 can be drawn from the given statements.

d)

None of the conclusions can be drawn from the given statements

44.
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.
a)
Invalid
b)
Valid
c)
Sammy is a Great Dane
d)
Sammy is really a cat.
45.
Draw a conclusion from the statement.
If you live in Orlando, then you live in Florida.
You live in Orlando.
a)
You live in Disney Land
b)
You are an old person.
c)
You live in Florida
d)
You live in Orlando
46.
Draw a conclusion from the statement.
If a whole number is even, then its square is divisible by 4.
The number I am thinking of is an even number.
a)
Then it's not odd.
b)
Then it's a whole number.
c)
Then its square is divisible by 4
d)
Then it's even.
47.
Draw a conclusion from the statement.
If you are at least 25 year old, then you can rent a car.
You can rent a car
a)
You are at least 25 years old
b)
You can rent a car
c)
You can go on a road trip
d)
Invalid
48.
Use the Law of Detachment to draw a conclusion from the two given statements. If not possible, write not possible.
Statement 1: If I study for one hour each day, then I will score well on the exam
Statement 2: I will score well on the exam
a)
 I study for 1 hour each day.
b)
I do not study for 1 hour each day
c)
If I do well on the exam, I studied for 1 hour each day.
d)
not possible
49.
Determine whether the stated conclusion is valid.
Given: If a point is the midpoint of a segment, then it divides the segment into two congruent segments.
R is the midpoint of QS.
Conclusion: QR=RS
a)
Valid
b)
R is the midpoint
c)
Invalid
d)
A point is the midpoint of a segment.
50.
Draw a conclusion from the statement.
If you go fishing, then you will need to bring your fishing rod.
You go fishing.
a)
You will need to bring your fishing rod.
b)
Invalid
c)
You are a boring person.
d)
You are going to catch a fish.
51.
Use the law of syllogism to draw a conclusion from the two given statements:
Statement 1: If you exercise regularly, then you have a healthy body
Statement 2: If you have a healthy body, then you have more energy
a)
You have more energy
b)
If you exercise regularly, then you have more energy
c)
You have a healthy body
d)
If you do not have a healthy body, then you do not exercise regularly
52.

If the sun is shining it is a beautiful day. If it is a beautiful day then we will go go hiking.

a)

If the sun is not shining, we will not go hiking.

b)

If the sun is shining then we will go hiking.

c)

No conclusion can be made.

d)

If we go hiking, then it is a beautiful day.

53.

If you go to the swimming pool, then you will enjoy yourself. If you enjoy yourself, you will want to return.

a)

If you return to the pool you will enjoy yourself.

b)

If you enjoy yourself, then you went to the pool.

c)

If you go to the pool, you will want to return.

d)

No conclusion can be made.

54.

Which law of logic is this?

If I clean the bathroom, then I don't have to do the dishes.

I cleaned the bathroom.

Therefore, I don't have to do the dishes.

a)

Law of Detachment

b)

Law of Syllogism

c)

Law of Contrapositive

d)

None

55.
If an angle is 40⁰, then it is acute.
∠A is 40⁰.
Using the Law of Detachment, what is the logical statement to conclude?
a)
∠A is complementary to ∠B
b)
∠A is acute.
c)
∠A is obtuse.
d)
∠A is 40⁰
56.
Draw a conclusion from the statement.
If Jack goes to school, then it is Monday.
Jack doesn't go to school.
a)
Jack skipped school.
b)
It isn't Monday.
c)
It's Saturday.
d)
Invalid
57.

Use the Law of Detachment to draw a conclusion from the two given statements. If not possible, write not possible.

Statement 1: If I study for one hour each day, then I will score well on the exam

Statement 2: I will study from 6pm to 7pm tonite.

a)

I study for several hours each day.

b)

I will do well on the exam

c)

If I do well on the exam, I studied for hours.

d)

not possible

58.
Using the Law of Syllogism, which of the following completes the statement to form a valid conclusion?
If it is snowing heavily, then school will be canceled.
If school is canceled, the big test will not be given today.
It is snowing heavily, then...
a)
Look out for the snowplows while driving to school.
b)
The big test will not be given today.
c)
The roads will be hard to drive on.
d)
You should call the school to see if school is canceled.
59.
Which is a valid conclusion from these statements?
If a quadrilateral is a rhombus, then it is a parallelogram.
If a quadrilateral is a parallelogram, then its opposite angles are congruent.
a)
Opposite angles of a quadrilateral are congruent
b)
Opposite angles of a rhombus are congruent
c)
Every quadrilateral is a rhombus
d)
Every parallelogram is a rhombus
60.
p→q
q→r
∴p→r
Which law is modeled?
a)
Law of Syllogism
b)
Law of Detachment
c)
Law of Contrapositive
d)
Law of Shannon
61.
p→q
p
∴q
Which law is modeled?
a)
Law of Syllogism
b)
Law of Detachment
c)
Law of Contrapositive
d)
Law of Shannon
62.
Use Law of Syllogism to make a conclusion.
 If a number is divisible by 10, then it is divisible by 2.  If a number is divisible by 2, then it is even.
a)
If a number is divisible by 10, then it is even,
b)
If a number is even, then it is divisible by 10.
c)
If a number is divisible by 2, then it is even.
d)
If a number is even, then it is divisible by 2.
63.
Use Law of Syllogism to make a conclusion.
If the perimeter of a square is 20 ft, then the length of a side is 5 ft.
If the length of a side of a square is 5 ft, then the area is 25 ft2.
a)
If the side of a square is 5 ft, then the perimeter is 20 ft.
b)
If the perimeter of a square is 20 ft, then the area is 25 ft2
c)
If the area of a square is 25 ft2, then the side length is 5 ft. 
d)
If the are of a square is 25 ft2, then the perimeter is 20 ft.
64.

Write the if-then statement that follows from the pair of true statements.If chris goes to the movies, then Todd will go to the movies. If Todd goes to the movies, then Sarah will go to the movies.

a)

If Chris goes to the movies, then Sarah will go to the movies.

b)
If Todd goes to the movies, then Chris will go to the movies.
c)
If Sarah goes to the movies, then Chris will go to the movies.
d)
If Chris goes to the movies, then Todd will go to the movies.