TNPSC Logical Reasoning - Logic
Exam Duration: 45 Mins Total Questions : 30
Each question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.
A: All balls are locks.
B: All keys are locks.
C: All keys are balls.
D: Some keys are locks.
E: Some locks are balls.
F: No ball is lock.
- (a)
ACD
- (b)
BEF
- (c)
CDE
- (d)
CEF
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements: Conc lusionsAll tubes are handles.All cups a
Conclusions:I. All cups are tubes. II.Some handles are not cups.
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
Each question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.
A: Some crows are flies.
B: Some flies are mosquitoes.
C: All mosquitoes are flies
D: Some owls are flies.
E: All owls are mosquitoes.
F: Some mosquitoes are not owls
- (a)
ABC
- (b)
ADE
- (c)
CEF
- (d)
EDB
Each question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.
A: All software companies employ knowledge workers
B: Infotech employs knowledge workers.
C: Infotech is a software company.
D: Some software companies employ knowledge workers.
E: Infotech employs only knowledge workers.
- (a)
ABC
- (b)
ACB
- (c)
ACE
- (d)
CDB
Each question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.
A: No spring is a season.
B: Some season are springs.
C: Some season are autumns.
D: No seasons are autumns.
E: Some springs are not autumns.
F: All springs are autumns
- (a)
BEFG
- (b)
CEB
- (c)
DEB
- (d)
DEA
Each question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.
A: Six is five
B: Five is not four.
C: Some five is ten
D: Some six is twelve
E: Some twelve is five
F: Some ten is four
- (a)
ABC
- (b)
ADE
- (c)
AEF
- (d)
EDC
Each question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.
A: Poor girls want to marry rich boys
B: Rich girls want to marry rich boys
C: Poor girls want to marry poor boys
D: Rich boys want to marry rich girls.
E: Poor girls want to marry rich girls.
F: Rich boys want to marry poor girls
- (a)
ABC
- (b)
ADE
- (c)
BCD
- (d)
DEF
Which of the following pairs of statements considered by themselves cannot both be and cannot both be false?
I: All P are Q
II: Some P are not Q
III: Some but notall, P are Q
IV: No P is Q
- (a)
I and II
- (b)
II and III
- (c)
I and III
- (d)
II and IV
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements: All roads are poles.No pole is a house
Conclusions:I. Some roads are houses II. Some houses are poles.
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements:All flowers are trees.No fruit is tree.
Conclusions:I.No fruit is flower II. Some trees are flowers.
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements:No bat is ball. No ball is wicket.
Conclusions:I. No bat is wicket II. All wickets are bats.
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements: No man is a donkey. Rahul is a man.
Conclusions:I.Rahul is not a donkey II.All men are not Rahul.
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements: All poles are guns.Some boats are not poles
Conclusions:I.All guns are boats II. Some boats are not guns
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements:All boys are honest. Sachin is honest
Conclusions:I.Sachin is a boy II. All honest persons are boys
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given statements to be true even if they seem to be at variance from the commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: Some hills are rivers. Some rivers are deserts. All deserts are roads.
Conclusions: I. Some roads are rivers. II. Some roads are hills III. Some deserts are hills.
- (a)
None follows
- (b)
Only I follows
- (c)
Only I and II follow
- (d)
Only II and III follow
- (e)
All follow
You have to take the given statements to be true even if they seem to be at variance from the commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: Some blades are hammers. Some hammers are knives. Some knives are axes
Conclusions: I. Some axes are hammers. II. Some knives are blades. III. Some axes are blades.
- (a)
None follows
- (b)
Only I follows
- (c)
Only II follows
- (d)
Only III follow
- (e)
None of these
You have to take the given two statements to be true even if they seem to be at variance from commonly known facts.Read the conclusion and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements:Some papers are pens.Angle is a paper
Conclusions:I.Angle is not a pen II. Angle is a pen
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if neither conclusion I nor II follows;
- (e)
if both conclusions I and II follows.
You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements:All politicians are honest.All honest are fair.
Conclusions: I.Some honest are politicians II. No honest is politician
III.Some fair are politicians IV. All fair are politicians.
- (a)
None follows
- (b)
Only I follow
- (c)
Only I and II follow
- (d)
Only I and III follow
You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the two given statements,disregarding commonly known facts.
Statements:All terrorists are guilty.All terrorists are criminals
Conclusions: I. Either all criminals are guilty or all guilty are criminals. II.Some guilty persons are criminals
III. Genrerally criminals are guilty IV. Crime and guilt go together
- (a)
Only I follows
- (b)
Only I and III follow
- (c)
Only II follows
- (d)
Only II and IV follow
You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: All flowers are toys. Some toys are tree. Some angles are trees.
Conclusions: I. Some angles are toys. II. Some tree are flowers III. Some flowers are angels.
- (a)
None follows
- (b)
Only I follows
- (c)
Only II follows
- (d)
Only III follows
- (e)
Only I and III follow
You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: All trains are buses. No room is bus. All boats are rooms.
Conclusions: I. No boat is train. II. No bus is boat. III. No train is room.
- (a)
None follows
- (b)
Only I and II follow
- (c)
Only II and III follow
- (d)
Only I and III follow
- (e)
All follow
You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: No rabbit is lion. Some horses are lions. All rabbits are tables.
Conclusions: I. Some tables are lions. II. Some horses are rabbits III. No lion is table.
- (a)
None follows.
- (b)
Only either I or III follows
- (c)
Only II and III follow
- (d)
Only III follows.
- (e)
None of these
Each of these questions consists of two statements P and Q.They may look factually absurd.You have to ignore this absurdity and concentrate only upon the logic involved there in.
P:Some musicians are not rich.All musicians are polite.Therefore musicians are not polite persons are rich.
Q:All musicians are rich.No rich person is polite.Therefore musicians are not polite.
- (a)
if both P and Q are true
- (b)
if both P and Q are false or doubtful
- (c)
if P is true and Q is false or doubtful
- (d)
if P is false or doubtful and Q is true
Each of these questions consists of two statements P and Q.They may look factually absurd.You have to ignore this absurdity and concentrate only upon the logic involved there in.
P:Some mangoes are apples.All grapes are mangoes.Therefore all apples are grapes.
Q:Some mangoes are apples.All apples are grapes.therefore some mangoes are grapes.
- (a)
if both P and Q are true
- (b)
if both P and Q are false or doubtful
- (c)
if P is true and Q is false or doubtful
- (d)
if P is false or doubtful and Q is true
You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: Some rats are cats. Some cats are dogs. No dogs is cow.
Conclusions: I. No cow is cat. II. No dog is rat. III. Some cats are rats.
- (a)
None follows
- (b)
Only I and II follow
- (c)
Only II and III follow
- (d)
Only III follows
- (e)
All I, II and III follow
Each question given below has a set of three or four statements.Each set of statements is further divided into three segments.Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.
A: All beautiful things are sad.She is beautiful.She is sad.
B: All nice things are flat.TVs are flat.TVs are nice things.
C: Potatoes are stems.All stems are fruits.Potatoes are fruits.
- (a)
A only
- (b)
A and B
- (c)
C only
- (d)
A and C
Each question given below has a set of three or four statements.Each set of statements is further divided into three segments.Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.A: All mammals are viviparous.Some fish are viviparous.Some fish are mammals.
A: All mammals are viviparous.Some fish are viviparous.Some fish are mammals.
B: All birds are oviparous.Some fish are not oviparous.Some fish are birds.
C: No mammal is oviparous.Some creatures are viviparous.Some creatures are not mammals.
D:Some creatures are mammals.Some creatures are viviparous.Some mammals are viviparous.
- (a)
A only
- (b)
B only
- (c)
C only
- (d)
D only
You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read both the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: All men are parrots. Some parrots are crows. All crows are hens.
Conclusions: I. Some men are hens. II. No man is hen.
- (a)
if only conclusion I follows;
- (b)
if only conclusion II follows;
- (c)
if either conclusion I or II follows;
- (d)
if either conclusion I nor II follows;
- (e)
if both the conclusions I and II follow;
Each question given below has a set of three or four statements.Each set of statements is further divided into three segments.Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, truth .but not just from one of them.
A: Citizens of X Islands speak on truth.Citizens of X Islands are young people.Young people speak only the truth.
B: Citizens of X Islands speak only the truth. Some X Islands are in Atlantic.Some citizens of X Islands are in the Atlantic.
C: Citizens of X Islands speak only the truth. Some young people are citizens of X Islands.Some young people speak only the truth.
D:Some people speak only the truth. Some Citizens of X Islands speak only the truth. Some people who speak only the truth are citizens of X Islands.
- (a)
A only
- (b)
B only
- (c)
C only
- (d)
D only
You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements:,All benches are desks. Some desks are roads. All roads are pillars.
Conclusions: I. Some pillars are benches. II. Some pillars are desks. III. Some roads are benches. IV. No pillar is bench.
- (a)
None follows
- (b)
Only either I or IV and III follow
- (c)
Only either I or IV follows
- (d)
Only either I or IV, and II follow
- (e)
All follow