Logical Reasoning Test

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Logical Reasoning Test - 20

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Weekly Quiz Competition

Question 1
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Direction: In the following question, a question followed by two statements. You have to decide whether the data provided in the statements are sufficient to answer the question. Read all the two statements and given answer.

Who is the shortest among the three persons?

Statements:

I. Ram is shorter than Shyam.

II. Shyam is shorter than Mohan.

A
Statement I is sufficient but statement II is not sufficient

B
Statement II is sufficient but statement I is not sufficient

C
Statement I and statement II both are necessary

D
Either statement I or statement II is sufficient

E
Statement I and statement II both are not sufficient

Solution

According to statement I,

Ram is shorter than Shyam.

According to statement II,

Shyam is shorter than Mohan.

According to both statements:

Ram is shorter than Shyam who is shorter than Mohan.
Question 2
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Directions For Questions

Direction: In the given question below is given a statement followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follows the given statement and choose your answer according to that.

...view full instructions

Statement: The use of non-conventional sources of energy will eliminate the energy crisis in the world.

Conclusions:

I. Modern technology is gradually replacing the conventional sources of energy.

II. The excessive exploitation of environment has led to depletion of conventional sources of energy.

A
Only conclusion I follows

B
Only conclusion II follows

C
Either I or II follows

D
Neither I nor II follows

E
Both I and II follow

Solution

With the development of new technology, new non-conventional sources of energy are being developed and due to excessive exploitation of the environment, the traditional sources of energy have declined. So both the conclusions follow the statement.
Question 3
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Directions For Questions

Direction: In the given question below is given a statement followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follows the given statement and choose your answer according to that.

...view full instructions

Statement: My first and foremost task is to beautify this city - if city X and Y can do it - why can't we do it. - Statement of Municipal Commissioner of city Z after taking over charge.

Conclusions:

I. The people of city Z are not aware about the present state of ugliness of their city.

II. The present Commissioner has worked in city X and Y and has good experience of beautifying cities.

A
Only conclusion I follows

B
Only conclusion II follows

C
Either I or II follows

D
Neither I nor II follows

E
Both I and II follow

Solution

The Commissioner only cites examples of cities X and Y and undertakes to beautify city Z. This does not imply that he has worked in cities X and Y. So, I do not follow. Also, nothing about people's response to the state of the city can be deduced from the statement. Thus, II also does not follow.
Question 4
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Direction: In the question below are given two statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with 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 red which are green is yellow

All green is black

Conclusions:

I. Some black are not yellow

II. Some red are black

A
Only conclusion I follows

B
Only conclusion II follows

C
Either conclusion I or II follows

D
Neither conclusion I nor II follows

E
Both conclusion I and II follows

Solution

The least possible diagram for the given statements is as follows:

Conclusions:

I. Some black are not yellow → False (It is possible but not deﬁnite)

II. Some red are black → True (All green are black and some red are green). Therefore, only conclusion II follows.
Question 5
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Directions For Questions

Direction: Read the following information carefully and answer the questions given below:

There are eight persons namely P, Q, R, S, T, U, V and W living in a building having eight floors. The ground floor is numbered 1 and the top floor is numbered 8 but not necessarily in the same order. Only three persons live below the floor on which T lives. Two people live between the floor on which T and W live. The number of people living above Q is the same as the number of people living below W. More than three people live between P and R. P lives on an odd numbered floor but not on the lowest floor. Three people live between S and V. S lives above V.

...view full instructions

Who among the following lives on the topmost floor?

A
Q

B
R

C
P

D
W

E
U

Solution

(1) Only three persons live below the floor on which T lives.

(2) Two people live between the floor on which T and W live.

(3) The number of people living above Q is the same as the number of people living below W.
Question 6
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Directions For Questions

Direction: Read the following information carefully and answer the questions given below:

There are eight persons namely P, Q, R, S, T, U, V and W living in a building having eight floors. The ground floor is numbered 1 and the top floor is numbered 8 but not necessarily in the same order. Only three persons live below the floor on which T lives. Two people live between the floor on which T and W live. The number of people living above Q is the same as the number of people living below W. More than three people live between P and R. P lives on an odd numbered floor but not on the lowest floor. Three people live between S and V. S lives above V.

...view full instructions

How many people live between W and U?

A
None

B
One

C
Two

D
Three

E
Four

Solution

(1) Only three persons live below the floor on which T lives.

(2) Two people live between the floor on which T and W live.

(3) The number of people living above Q is the same as the number of people living below W.

Thus, no one lives between W and U.
Question 7
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Directions For Questions

Direction: Read the following information carefully and answer the questions given below:

There are eight persons namely P, Q, R, S, T, U, V and W living in a building having eight floors. The ground floor is numbered 1 and the top floor is numbered 8 but not necessarily in the same order. Only three persons live below the floor on which T lives. Two people live between the floor on which T and W live. The number of people living above Q is the same as the number of people living below W. More than three people live between P and R. P lives on an odd numbered floor but not on the lowest floor. Three people live between S and V. S lives above V.

...view full instructions

Who among the following lives just below Q?

A
P

B
R

C
V

D
T

E
Q lives on the lowest floor

Solution

(1) Only three persons live below the floor on which T lives.

(2) Two people live between the floor on which T and W live.

(3) The number of people living above Q is the same as the number of people living below W.

Thus, ‘V’ lives just below ‘Q’
Question 8
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Directions For Questions

Direction: Read the following information carefully and answer the questions given below:

There are eight persons namely P, Q, R, S, T, U, V and W living in a building having eight floors. The ground floor is numbered 1 and the top floor is numbered 8 but not necessarily in the same order. Only three persons live below the floor on which T lives. Two people live between the floor on which T and W live. The number of people living above Q is the same as the number of people living below W. More than three people live between P and R. P lives on an odd numbered floor but not on the lowest floor. Three people live between S and V. S lives above V.

...view full instructions

Four out of five are the same in a certain way and thus form a group. Which among the following does not belong to that group?

A
R

B
U

C
T

D
Q

E
S

Solution

(1) Only three persons live below the floor on which T lives.

(2) Two people live between the floor on which T and W live.

(3) The number of people living above Q is the same as the number of people living below W.

All of them live on the even number floor except S.

Thus, ‘S’ does not belong to the group.
Question 9
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Directions For Questions

Direction: Read the following information carefully and answer the questions given below:

There are eight persons namely P, Q, R, S, T, U, V and W living in a building having eight floors. The ground floor is numbered 1 and the top floor is numbered 8 but not necessarily in the same order. Only three persons live below the floor on which T lives. Two people live between the floor on which T and W live. The number of people living above Q is the same as the number of people living below W. More than three people live between P and R. P lives on an odd numbered floor but not on the lowest floor. Three people live between S and V. S lives above V.

...view full instructions

V is related to floor 2, P is related to floor 4 in a certain way. Similarly, U is related to which of the following floor?

A
Floor 5

B
Floor 3

C
Floor 8

D
Floor 7

E
Floor 6

Solution

(1) Only three persons live below the floor on which T lives.

(2) Two people live between the floor on which T and W live.

(3) The number of people living above Q is the same as the number of people living below W.

As given in question, Person is related to a floor just above the floor where he lives.

Thus, ’U’ is related to floor 7.
Question 10
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Directions: The following question given below consists of two statements I and II given below it. You have to decide whether the data provide in the statements are sufficient to answer the question. Read both the statements and select the correct option.

Six people P, Q, R, S, T and U are seated around a circular table and are equidistant from each other. If all of them are facing inside the circle, who is second to the right of T?

I. P is to the immediate left of Q and Q sits opposite R.

II. S is to the immediate left of U.

A
Data in statement I alone are sufficient to answer the questions, while the data in statement II alone are not sufficient to answer the question.

B
Data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.

C
Data either in Statement I or in Statement II alone are sufficient to answer the question.

D
Data even in both statements I and II together are not sufficient to answer the question.

E
Data in both statements I and II are necessary to answer the question.

Solution

Statement I: P is to the immediate left of Q and Q sits opposite R.

Here the position of T is not given.

So, data in statement (I) alone are not sufficient to answer the question.

Statement II: S is to the immediate left of U.

Here the position of T is not given.

Therefore, data in statement (II) alone are not sufficient to answer the question.

Combining I and II: P is to the immediate left of Q and Q sits opposite R.

S is to the immediate left of U.

So we get the following diagram.

So, Q is second to the right of T.

Data in both statements (I) and (II) are necessary to answer the question.