Data Sufficiency Practice Test

7/28/2019 Data Sufficiency Practice Test

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Data sufficiency practice test1.

Directions(1-10): Each question given below has a problem and two statements

numbered I and II giving certain information. You have to decide if the information given

in the statement is sufficient for answering the problem.

Mark your answer as

(a) if the data in statement I alone are sufficient to answer the question

(b) if the data in statement II alone are sufficient answer the question

(c) if the data either in I or II alone are sufficient to answer the question

(d) if the data even in both the statements together are not sufficient to answer the

question

(e) if the data in bothe the statements together are needed

What is Reen's rank in the class?

I . There are 26 students in the class

II. There are 9 students who have scored less than Reena

AaBb

Cc

Dd

Ee

Answer: Option E

Explanation:

From I and II we conclude that there are 16 students above Reena in rank. Thus, Reen'srank is 17 th in the class. So, both the statements are necessary.

View Answer2.

Who is father of M?

I . A and B are brothers

II. B's wife is sister of M's wife


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Aa

Bb

CcDd

Ee

Answer: Option DExplanation:

From II we conclude that B is the brother-in-law of M. So, even from both the

statements, we can't find out who is the father of M.

View Answer3.

When is Manohar's birthday this year?

I .It is between January 13 and 15 , January 13 being Wednesday

II. It is not on Friday

Aa

Bb

CcDd

Ee

Answer: Option A

Explanation:

From statement I, we conclude that Manohar's birthday is on January 14 , which is

Thursday, this year. So only I is needed

View Answer4.

What is the monthly salary of Praveen?

I . Praveen gets 15% more than Sumit while Sumit gets 10% less than Lokesh.

II. Lokesh's monthly salary is Rs.2500

AaBb

Cc

DdEe

Answer: Option E

Explanation:


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From both the given statements, we find that :

Praveen's salary =1115% of (90% of Rs. 2500) = Rs.2587.50

So, both I and II are required

View Answer5.

The chairman of a big company visits one department on Monday of every week except

for the Monday of third week of every month. When did he visit the purchase

department?

I . He visited Accounts department in the second week of September after having visitedpurchase department on the earlier occasion.

II . He has visited purchase department immediately after visiting stores department but

before visiting Account department

AaBb

Cc

Dd

Ee

Answer: Option A

Explanation:

From statement I we can conclude that the chairman visited purchase department onMonday of the first week of September .So I alone is sufficient.

View Answer6.

Which day of the last week did Satish meet Kapil at Kapil's residence?

I. Kapil was out of town from Monday to Wednesday. He returned on Thursday morning

II . On friday night Sathish telephoned his friend to inform that only yesterday he had got

approval of Kapil after personally explaining to him all the details

Aa

BbCc

Dd

Ee

Answer: Option B

Explanation:


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statement II revels that Satish met his friend Kapil on the day prior to Friday. ie,

Thursday.

View Answer7.

How much was the total sale of the company ?

I .The company sold 8000 units of product A each costing Rs.25

II . The company has no other product line

Aa

Bb

CcDd

Ee

Answer: Option E

Explanation:

From statement I and II together we find that company sells only product A and total sale

of product A = Rs.(8000x25)=Rs.200000 which is also the total sale of the company

View Answer8.

A,B,C,D and E are sitting in a row. B is between A and E. Who among them is in the

middle?

I. A is left of B and right of D

II. C is at the right end

Aa

Bb

CcDd

Ee

Answer: Option E

Explanation:

Clearly we have the order : A,B,E

From I we have the order : D, A B,E

From II we get the complete sequence as D,A,B,E,C. Cleraly B is in middle. So both Iand II are required

View Answer


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9.

Is Arun taller than Sachin?

I . Dinesh is of the same height as Arun and Sachin

II . Sachin is not shorter than Dinesh

Aa

BbCc

Dd

Ee

Answer: Option A

Explanation:

From statement I we can conclude that Arun, Sachin and Dinesh are of same height

View Answer10.

In a certain language 'pit nac mit' means 'red pant shirt' Which word mean 'pant' in that

language?

I. 'mit tim nac sir' means 'he wore red pant'

II. 'nee jic pit' means 'shirt is dirty'

AaBb

CcDd

Ee

Answer: Option D

Explanation:

Clearly from each of the statements, we find that the code for 'pant' is either 'mit' or

'nac' .So none of them sufficient to answer the question

Data Sufficiency Aptitude basics, practice questions, answers and explanationsPrepare for companies tests and interviews

Introduction: This section consists of problems in which a question on any topic such as

Coding-Decoding, Puzzle Test, Blood Relations, Mathematical calculations etc. is put


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forward followed by certain statements containing facts providing clues to solve the

question.

I. Each Question given below has a problem and two statements numbered I and II givingcertain information. You have to decide if the information given in the statements is

sufficient for answering the problem. Indicate your answer as

(a) if the data in statement I alone are sufficient to answer the question;

(b) if the data in statement II alone are sufficient to answer the question;(c) if the data either in I or II alone are sufficient to answer the question;

(d) if the data even in both the statements together are not sufficient to answer the

question;(e) if the data in both the statements together are needed;

Example:

1. What is Reenas rank in the class?

I. There are 26 students in the class.II. There are 9 students who have scored less than Reena.

Exp: Option (e).

From I and II, we conclude that there are 16 students above Reena in rank. Thus, Reenas

rank is 17th in the class. So, both the statements are necessary.

II. Each Question given below has a problem and three statements numbered I,II and IIIgiving certain information. You have to decide if the information given in the statements

is sufficient for answering the problem. Remember out of the three statements, each of

them alone can also be sufficient to answer the question. In such cases for example, your

answer should be taken as Only I or Only II or Only III and not Only I.

Example:

1. How many sons does X have?

I. Q and U are brothers of T.

II. R is sister of P and U.III. R and T are daughters of X.

(a) I and II only.

(b) II and III together.

(c) I, II and III together.(d) I, II and III together are not sufficient

(e) None of these


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Exp: Option (d).

The information given in the three statements together is also not sufficient to answer the

given question.

Each Question given below has a problem and two statementsnumbered I and II giving certain information. You have to decide if theinformation given in the statements is sufficient for answering the

problem.

1. How is D related to A?

I. B is the brother of A.

II. B is Ds son.

(a) if the data in statement I alone are sufficient to answer thequestion;

(b) if the data in statement II alone are sufficient to answer the

question;

(c) if the data either in I or II alone are sufficient to answer the

question;

(d) if the data even in both the statements together are not sufficientto answer the question;

(e) if the data in both the statements together are needed;

2. Who is Cs partner in a game of cards involving four players A, B, C

and D?

I. D is sitting opposite to A.

II. B is sitting right of A and left of D.


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question;


question;



3. What day is the fourteenth of a given month?

I. The last day of the month is a Wednesday.

II. The third Saturday of the month was seventeenth.



question;


question;



Each Question given below has a problem and three statementsnumbered I,II and III giving certain information. You have to decide if

the information given in the statements is sufficient for answering theproblem. Remember out of the three statements, each of them alone

can also be sufficient to answer the question. In such cases for


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example, your answer should be taken as Only I or Only II or Only IIIand not Only I.

4. Five persons- A, B, C, D and E are sitting in a row. Who is sitting in

the middle?

I. B is between E and C

II. B is to the right of E

III. D is between A and E.

(a) I and II together.

(b) II and III together.(c) I and III together.

(d) I, II and III together.(e) None of these

5. In which year was Sanjay born?

I. Sanjay is six years older than Gopal.II. Gopals brother was born in 1982.

III. Sanjays brother is two years younger than Gopals brother whowas eight years younger

a) I and II together.

b) II and III together.c) I and III together.

d) I, II and III together.e) None of these

6. How many sons does X have?

I. Q and U are brothers of T.II. R is sister of P and U.

III. R and T are daughters of X.


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(a) I and II only.(b) II and III together.

(c) I, II and III together.(d) I, II and III together are not sufficient

(e) None of these

Answer & Explanations

1. Ans: e. From both the statements together, we find that D is the

father of B and B is the brother of A. So, D is the father of A. Thus,both the given statements are needed.

2. Ans: c. Clearly, each of the given statements shows that B is sitting

opposite to C or B is the partner of C.

3. Ans: b. Statement II reveals that 17th was a Saturday andtherefore, 14th was Wednesday. So, only statement II is needed.

4. Ans: d. From I, the order is E, B, C or C, B, E.

From II, the order is E, BFrom III, the order is A, D, E.

Combining the above three, we get the order as: A, D, E, B, C.Clearly, E is sitting in the middle. So, all the three statements are

required.

5. Ans: d. From II, we know that Gopals brother was born in 1982.From III, we find that Gopals brother was 8 years younger to him ie,

Gopal was born in 1974.

From I, we find that Sanjay is 6 years older than Gopal. Thus, Sanjaywas born in 1968.. So, all the three statements are required.

6. Ans: d. The information given in the three statements together is

also not sufficient to answer the given question.

1. Select a figure from amongst the Answer Figures which will continuethe same series as established by the five Problem Figures.
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2. Select a suitable figure from the Answer Figures that would replace

the question mark (?).

3. Choose the figure which is different from the rest.

4. Choose the alternative which is closely resembles the water-imageof the given combination.

5. Find the number of triangles in the given figure.

6. Find out the alternative figure which contains figure (X) as its part.
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7. Identify the figure that completes the pattern.

8. Select a suitable figure from the four alternatives that would

complete the figure matrix.

9. Choose the alternative which is closely resembles the mirror image

of the given combination.

10. Find out the alternative figure which contains figure (X) as its part.

Answers & Explanation:

1. Option (4) Explanation: In each step, the CW-end element moves to

the ACW-end position.
http://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20Q10_0.pnghttp://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20Q9_0.pnghttp://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20Q8.pnghttp://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20Q7.png


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2. Option (2) Explanation: The upper element rotates through 180oand its head gets inverted. The lower element gets vertically inverted.

3. Option (2) Explanation: Figure (1) and fig. (3) can be rotated into

each other and fig. (4) and fig. (5) can be rotated into each other.

4. Option (3)

5. Option (2) Explanation: The figure may be labelled as shown.

The simplest triangles are ABG, BCG, CGE, CDE, AGE and AEF i.e. 6 innumber.

The triangles composed of two components each are ABE, ABC, BCE

and ACE i.e. 4 in number. There are 6 + 4 = 10 triangles in the figure.

6. Option (3)

7. Option (4)

8.Option (3) Explanation: The third figure in each row comprises of theparts common to the first two figures.

9. Option (2)
http://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20A7.pnghttp://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20A6_0.png


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10.Option (4)

Logical problems practice test1.

In Arun opinion, his weight is greater than 65 kg but less than 72 kg. His brother doesntnot agree with Arun and he thinks that Aruns weight is greater than 60 kg but less than 70

kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are

correct in their estimation, what is the average of different probable weights of Arun?

A67 kgB68 kg

C69 kg

DData inadequate

Answer: Option A

Explanation:

If all are correct the waight should be 66 or 67

from the options it is 67.

View Answer2.

Compare the knowledge of persons X, Y, Z, A, B and C in relation to each other.

1.X knows more than A.

2.Y knows as much as B.

3.Z knows less than C.

4.A knows more than Y

The best knowledge person amongst all is:

A XBY

CA
http://placement.freshersworld.com/power-preparation/sites/default/files/Fig%20Problem%20Ex%20A10.png


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DC

Answer: Option A

Explanation:

Clearly, we have : A < X, Y = B, Z < C, Z < B, Y < A thus the sequence becomes X > A

>Y = B > C > Z.So, X is the best knowledgeable person.2.Five children weredministrated psychological tests to know their intellectual levels. In the report,

psychologists pointed out thatthe child A is less intelligent than the child B. The child C is less intelligent than the child

D. The child B is less intelligent than the child C and child A is more intelligent than

child E.

View Answer3.

Read the following information carefully and answer the questions

given below it:

(A)Gopal is shorter than Ashok but taller than Kunal.

(B)Navin is shorter than Kunal.

(C)Jayesh is taller than Navin.

(D)Ashok is taller than Jayesh.

Who among them is the tallest?

AGopal

BAshokCKunal

DNavin

Answer: Option B

View Answer4.

Answer the questions on the basis of the information given below. The Head of a newly

formed government desires to appoint five of the six elected members A, B, C, D, E andF to portfolios of Home, Power, Defence, Telecom and Finance. F does not want any

portfolio if D gets one of the five. C wants either Home or Finance or no portfolio. B saysthat if D gets either Power or Telecom then she must get the other one. E insists on a

portfolio if A gets one.

Which is a valid assignment?AA-Home, B-Power, C-Defence, D-Telecom, E-Finance.

BC-Home, D-Power, A-Defence, B-Telecom, E-Finance


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CA-Home, B-Power, E-Defence, D-Telecom, F-Finance

DB-Home, F-Power, E-Defence, C-Telecom, A -Finance

Answer: Option B

Explanation:

From the above information we can infer that option (2) is correct.

View Answer5.

Five children are sitting in a row. S is sitting next to P but not T. K is sitting next to R

who is sitting on the extreme left and T is not sitting next to K. Who are sitting adjacentto S ?

AK & P

B R & P

C Only PD P and T

Answer: Option D

Explanation:

S is sitting next to P . So the order S,P or P,S is followed. K is sitting next to R. So, theorder R, K is followed because R is on the extreme left. T is not next to P or K. So the

arrangement will be R, K,P,S,T. Clearly, P and T are sitting adjacent to S.

View Answer6.

Directions (Q6-10):-Read the following information and answer the questions givenbelow it:

(1)Seven students P, Q, R, S, T, U and V take a series of tests.

(2)No two students get similar marks.(3)V always scores more than P.

(4)P always scores more than Q.

(5)Each time either R scores the highest and t gets the least or alternatively S scores the

highest and U or Q scores the least.

If S is ranked sixth and Q is ranked fifth, which of the following can be true ?

AV is ranked first or fourth.BR is ranked second or third.

CPis ranked second or fifth.

DU is ranked third or fourth.ET is ranked fourth or fifth.


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Answer: Option D

Explanation:

V > P, P > Q i,e V > P > Q.If R scores the highest, we have R > ---------- > T.

If S scores the highest, we have S > ----------- > Qor S > ---------- > U.

If S is ranked sixth and Q is ranked fifth,we have _ > _ > _ > _ > Q > S > _ In this case,R will ran the highest and thus T will rank the least. we have R > _ > _ > _ > Q > S > T

Also, the order V > P > Q will be maintained i,e V and P will have second, third or fourth

places. So, statements (a), (b), (c), (e) cannot follow. Thus (d) is the answer.

View Answer7.

If R gets more, V should be ranked not lower than:

Asecond

BthirdCfourth

Dfifth

Esixth

Answer: Option C

Explanation:

If R ranks most, T ranks lowest and occupies seventh place. Since V always ranks above

P and Q so in the maximum, P and Q will occupy fifth and sixth places. Thus, V will notrank lower than fourth.

View Answer8.

If R is ranked second and Q is ranked fifth, which of the following Must be true?

AS is ranked third.BT is ranked sixth.

CP is ranked sixth.DV is ranked fourth.

EU is ranked sixth.

Answer: Option B

Explanation:

If R is ranked second, S will rank first and Q and U lowest. But Q ranks fifth. So, U rankslowest. Also, the order V > P > Q will be followed. So, the arrangement will be S > R >


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V > P > Q > _ U. Thus , the sixth place will be occupied by T.

View Answer9.

If S is ranked second, which of the following can be true?

AU gets more than VBV gets more than S

CP gets more than R

DP gets more than VET gets more than Q

Answer: Option A

Explanation:

If S ranks second, R ranks first and T ranks lowest. The order V > P > Q will befollowed. So, the arrangement will be R > S > _ > _ > _ > _ > T. Clearly, statements (b),

(c), (d) and (e) cannot follow. so the answer is (a).

View Answer10.

If V is ranked fifth, which of the following must be true?

AS scores the highest

BR is ranked secondCT is ranked third

DQ is ranked fourthEU scores the least

Answer: Option A

Explanation:

If V ranks fifth, P and Q coming before it will occupy sixth and seventh places

respectively i,e Q ranks least.So, S will score the highest.

Logical Problems Aptitude basics, practice questions, answers and explanationsPrepare for companies tests and interviews

Logical Problems

The word Logic is derived from the Greek noun logos meaning both thought and'the word expressing thought'.


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LOGIC, is the science of thought as expressed in language. This means that the

questions on logic are to be solved as per the information given without any concern of

the formal validity or truth of the statements i.e. conclusion should follow directly fromthe statements given.

Examples :

1. A software engineer has the capability of thinking 100 lines of code in five minutes

and can type 100 lines of code in 10 minutes. He takes a break for five minutes afterevery ten minutes. How many lines of codes will he complete typing after an hour?

a)250

b)220

c)150

d)200

Ans: a

Explanation: First, 5 five minutes he thinks, next five minutess he write code then takes

a break. So for the first 15 mins he writes 50 lines of code. Next 5 minutes he write, then

5 min. think & 5 minutes rest. Next 10 minutes write, then 5 minutes rest. Next 5 minutes

think, 5 minutes write and 5 minutes he takes rest. 25 minutes he write. In 10 min hewrites 100 lines. So in 25 min. 250 lines.

2. Nikhil gets Rs.250 from his parents every week for his expenses. He puts Rs.5 in his

piggy bank on everyday except Sunday when he puts Rs.10 in the piggy bank. He eatssubsidized lunch in the college canteen for Rs. 10 on all college days except Saturday

when he treats himself to the special lunch for Rs.25. Bus fare to college is Rs.4 each

way. He has got a holiday on Sunday. This week, Nikhil wants to buy a book which costsRs.100. For this, he was walking to and from the college. He is left with Rs.3 after buying

the book. Assuming no other expenses, how many times did Nikhil walk this week?

a)2

b)3

c)4

d)5

Ans:c


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Explanation: 40 goes into the piggy bank leaving Rs.210 for expenses. Normal expense

on lunch is Rs.75 and on bus Rs.48, leaving Rs.87. Nikhil is short of Rs.13 for the book.

For this, if he saves bus fares, he must walk four times saving Rs.16, and then he is leftwith Rs.3 after buying the book. Hence option c.

3. Akshar, Brinda, Cathy and Dinesh are four friends who live in the same area and work

for the children in a nearby slum. One of them cooks the childrens breakfast and each ofthe other three teach a different subject from mathematics, reading & writing and

drawing. They study mechanical engineering, psychology, medicine and economics.

Neither the economics nor the psychology student cooks breakfast. Brinda does not teachreading & writing. Dinesh is the medical student, and he does not cook breakfast. Cathy

teaches drawing. Akshar studies mechanical engineering. Who teaches mathematics?

a) Akshar,

b) Brinda,

c) Cathy

d) Dinesh

Ans:b

Explanation: Since the economics, psychology and medicine students do not cook

breakfast, the mechanical engineering student does, and that is Akshar. Cathy teaches

drawing. Now, since Brinda does not teach reading and writing, she must be teaching

Maths. So option b.

4.A monkey starts climbing up a tree 20ft. tall. Each hour, it hops 3ft. and slips back 2ft.

How much time would it take the monkey to reach the top?

a) 21 hours

b) 12 hours

c) 18 hours

d) 15 hours

Ans:c

Explanation: Every hour, he gains 3 ft and loses 2 ft, for a total gain of 1 ft. So after the17th hour, he's at 17 ft high. in the 18th hour, he climbs up 3 feet. Since 17 ft + 3 ft = 20

ft, he's at the top of the tree. So option c.


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5. If a light flashes every 6 seconds, how many times will it flash in of an hour?

a) 450

b) 451

c) 350

d) 425

Ans:b

Explanation:There are 60 minutes in an hour. In of an hour there are (60 * ) minutes

= 45 minutes. In of an hour there are (60 * 45) seconds = 2700 seconds. Light flashedfor every 6 seconds. In 2700 seconds 2700/6 = 450 times. The count start after the first

flash, the light will flashes 451 times in of an hour. So option b.

Directions (Q. 6- 10) : There are five friends Sachin, Kunal, Mohit, Anuj and

Rohan. Sachin ia shorter than Kunal but taller than Rohan. Mohit is tallest. Anuj is

a little shorter than Kunal and little taller than Sachin.

6.Who is the shortest?

a)Rohan

b)Sachin

c)Anuj

d)Kunal

Answer: a

Explanation:

Let us denote the five boys by the first letter of their names,namely S, K, M, A and R.

Then , R < S < K < M and S < A < K.

R < S < A < K < M


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Rohan is shortest.

7. If they stand in the order of their heights, who will be in the middle?

a)Kunal

b)Rohan

c) Sachin

d)Anuj

Answer: d

Explanation:

R < S < A < K < M

Anuj is in the middle.

8. If they stand in the order of increasing heights, who will be the second?

a) Anuj

b) Sachin

c) Rohan

d)Kunal

Answer: b

Explanation:

R < S < A < K < M.

In the order of increasing heights i,e shortest to tallest, Sachin is second.

9. Who is the second tallest?


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a) Sachin

b) Kunal

c) Anuj

d) Rohan

Answer: b

Explanation:

R < S < A < K < M

Kunal is second tallest.

10. Who is taller than Anuj but shorter than Mohit?

a) Kunal

b) Rohan

c) Sachin

d)Data Inadequate

Answer: a

Explanation:

R < S < A < K < M.

Kunal is taller than Anuj but shorter than Mohit.

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Data Sufficiency Practice Test