Wipro Practice Venn Diagram Questions

Dear Reader ,

In Wipro placement test you can expect these type of venn diagram questions which is easy to solve with little bit concentration by logical analysis.

Question 1

If 40% of the people read newspaper X, 50% read newspaper Y and 10% read both the papers. What percentage of the people read neither newspaper?

a) 10%. b) 15%. c) 20%. d) 25%.

Answer : c) 20%.

Reason :

40% read newspaper X

50% read newspaper Y and out of this 10% read both X and Y

That means X alone is read by 30%,

Y alone is read by 40%

Both are read by 10%

People who read X alone + People who read Y alone + People who read both X and Y = 30% + 40% + 10% = 80%

This means the balance 20% don't read either of the newspapers.

Question 2

In a metropolitan city 25% neither watch TV news nor read newspaper, 35% read a newspaper and 20% read a newspaper and watch the news on television also. What percent of people watch Television?

a)55% b) 60% c) 50% d) 40%

Answer : b) 60%.

Reason :

Let X% of people watch television.

People who read Newspaper – 35%

People who watch TV as well as read newspaper – 20%

From Venn diagram, we can infer that people who watch Television alone = (X-20)%

People who read Newspaper alone = 35% - 20% = 15%

People who neither watch TV nor newspaper is given as 25%. This means, people who watch either TV or Newspaper or Both = 100 - 25 = 75%

Also this 75% will be equal to People who watch TV alone + People who read Newspaper alone + People who watch TV and read Newspaper

Or 75% = (X-20)% + 15% + 20%

Or X = 60%

Question 3

Out of the total of 200 musicians in Rehman Music club, 10% can play all the three instruments- guitar, violin and flute. The number of musicians who can play any two and only two of the above instruments is 70. The number of musicians who can play the guitar alone is 80. What is the total number of those who can play violin alone or flute alone?

a) 20 b) 30 c) 40 d) 50

Answer : b) 30

Reason :

Number of people who can play all the three instruments = 10% of 200 = (10/100)200 = 20 (people in pink colored area)

Musicians who can play any two and only two of the three instruments - 70 (Sum of people in grey colored areas)

Number of musicians who can play Guitar alone = 80

Number of musicians who can play violin alone or flute alone = Sum of people in blue areas = 200 -170 = 30

Verbal Logical Interpretation And Reasoning Questions

Dear Reader, below are three logical interpretation and reasoning questions for your practice.

Question 1

In Chennai city there are four women named A,B,C and D. They always compare themselves in respect of richness and their age. A is the oldest but not the poorest. C is the richest but not the oldest. B is older than D but not than A or C. A is richer than B but not than D. The four women meet near Nandambakkam Industrial Estate. Their names are to be arranged (descending) in respect of age and richness, respectively as

a) ABCD, CADB b) ACBD, CDAB C) ACBD, CDBA d) ACDB, CDAB

Answer : b) ACBD, CDAB

Reason :

For such kind of questions, there can be two approaches. Either to plot the values according to the question statements Or by comparing options one by one with the statements in question. Usually second method of comparing options one by one with the statements in questions could be a bit faster approach.

Consider Option a)

Age Order Given : ABCD

Richness Order Given : CADB

Interpretation : One of the statements in question says "B is older than D but not than A or C". Hence there is no way for B to come ahead of C as in the option a. Hence option a) cannot be true.

Consider Option b)

Age Order Given : ACBD

Richness Order Given : CDAB

Interpretation : You can find all the question statements regarding age and richness hold true when compared with option b. Hence option b is the correct answer.

Question 2.

Read the following passage and say which of the following statements is true?

There are three ladies in a meeting: Mrs. Yellow, Mrs. Green and Mrs. Brown. They are wearing yellow, green and brown sarees. Mrs. Yellow says: “ Did you notice that the colours of our sarees are different from our names?” the person who is wearing the green saree says . “Yes, you are right!”

If the above information is true then which of the following statement is true?

a. Mrs.Yellow was wearing a brown saree

b. Mrs. Green was wearing a brown saree

c. Mrs. Brown was wearing the Yellow saree.

Answer : a)Mrs.Yellow was wearing a brown saree

Reason :

It is given that Mrs. Yellow was not wearing a yellow saree because of her statement. She was also not wearing the green saree because one wearing the green saree agreed to the statement. Therefore Mrs. Yellow was wearing a brown saree. Mrs. Green was wearing a yellow saree and Mrs. Brown was wearing the green saree

Question 3

Ramesh, Madhusudhan, Sanjeevan, Kannayiram and Keshav are sitting in a circle facing the centre. Ramesh is immediate left of Sanjeevan. Kannayiram is between Sanjeevan and Keshav.

If the above information is true then which of the following is true?

a) Keshav is on the immediate left of Ramesh.

b) Kannayiram is on the immediate left of Ramesh.

c) Madhusudhan is on the immediate left of Ramesh.

Answer : c). Madhusudhan is on the immediate left of Ramesh.

Reason :

Madhusudhan is on the immediate left of Ramesh is correct. Based on the information given the seating arrangement will be (anti clockwise) Keshav, Kannayiram, Sanjeevan, Ramesh, Madhusudhan

IBM Placement Papers 2007

1. The number in the unit's place when 7 is raised to the power of 173 is?


2. In a basket there are 4 pairs of brown sox, 2 pairs of red sox and 3 pairs of blue sox. A boy picks a pair at once from this basket. What is the probability
that he picks a correct pair of sox?


3. The geometric mean of two numbers is 6. What are the numbers if it is known that their arithmetic mean is 10?


4. The ratio of water to milk in a 15 litre solution is 1:4. The shopkeeper adds some milk to make the ratio to 1:5. How many litres of milk was added?


5. It was found that there were a total of 46 people at a company dinner. Each of the persons shook hands with all other paersons. What would be the total
number of hand shakes?


6. An F1 driver races a 4 laps at speeds of 270, 270, 290 and 280kmph. What is his average speed in the whole race?


7. A square tin sheet is made into a cube by cutting a square each from all corners and then folding the sides up. If this cube can hold 1000 ml of water, what
was the side of the original tin sheet?


8. How many cylinders of radius r/10 and height h/10 can be formed by melting and reforging a metalic cylinder of radius h and height r?


9. Ravi has Rs200 with him. With this money he can either buy 25 apples or 15 pears. He keeps 15% of the money for the next day and buys 15 apples. How many
pears can he buy with the remaining money?


10. In 2007 a kg of mangoes were sold at a rate of Rs 30 per Kg. If the cost of mangoes increases at 2% more than the inflation rate which is 10%, what would
2Kgs of mangoes cost in 2010?


11. A farmer joins the mid points of his square shaped paddy field and grows paddy only in the inner square. What is the area used for paddy if the area of the
field is A sq metres?


12. A rubber ball is dropped from a height of 16 metres and each time it bounces back to half the height. What would be the distance travelled by the ball before
it comes to rest?


13. The number of rational numbers between 0 and (42cube - 23cube) is __
[ans: infinite]

14. It's observed that the first day of 1930 was a Wednesday. What day would be the year's last day?


15. Ravi, Ramu and Raju shared some bullets among them. Each of them fired 4 bullets and then put all the remaining bullets into a common box. If the number of
bullets now in the box is exactly the same as the number each of them initially got, how many bullets did they start off with before sharing?


16. Anil, Bobby and Cathy can independently do a pice of work in 40, 50 and 60 days. They together started off doin the work. After 7 days Bobby left work and
retured on the 10th day. How long will they take to complete the work?

Infosys Placement Papers Kochin, August 2006

1. Two people are playing with a pair of dies. Instead of numbers, the dies have different colors on their sides. The first person wins if the same color appears on both the dies and the second person wins if the colors are different. The odds of their winning are equal. If the first dice has 5 red sides and 1 blue side, find the color(s) on the second one.

2. A car is traveling at a uniform speed. The driver sees a milestone showing a 2-digit number. After traveling for an hour the driver sees another milestone with the same digits in reverse order. After another hour the driver sees another milestone containing the same two digits separated by a zero. What is the average speed of the driver?

3. There are 20 poles each with a constant distance between them. A car takes 24 second to reach the 12th pole. How much will it take to reach the last pole.

4. Mohan has a son and 2 daughters.The product of the ages of his children is 72. The sum of their ages form his house number.His son is the eldest of three. Can you tell the ages of all the three?

5. There is a safe with a 5 digit number as the key.The 4th digit is 4 greater than second digit, while 3rd digit is 3 less than 2nd digit. The 1st digit is thrice the last digit.There are 3 pairs whose sum is 11.Find the number.

6. Jhon's family is such that each boy in this family has as many sisters as brothers. And each girl has twice as many brothers as sisters. Find the number of boys and number of girls in Jhon's family.

7. A wall clock loses 10 minutes every 1 hour. In 1 hour as per the wall clock , a table clock gets 10 minutes ahead of it. In 1 hour as per the table clock an alarm clock falls 5 minutes behind it. In 1 hour as per the alarm clock, a wristwatch gets 5 minutes ahead it. At noon, all 4 timepieces were set correctly. To the nearest minutes, what time will the wrist show when the correct time is 6 p.m. on the same day ?

8. Two trains of length 1/6 miles are moving toward each other with a speed of 60 miles per hour.In how much time the two locomotives cross each other.

TCS Placement Papers 2007

1. Synonyms

1.heap

2.cargo

3.belate

4.divulge

2. What is the value of @@+36-++@54, where + represents "square root" and @ represents "square"

3. Andy, Steve and Robert can do a piece of work in 6 days. Andy alone can do the work in 24 days while Steve would take 16 days to complete it. How many days would it take Robert to complete the same work.

4. Ravi, who is a copy writer can copy 50 papers in 10 hours. When he teams up with Usha, his junior, they can copy 70 papers in 10 hours. Find out the time required by Usha to copy 26 papers?

5. A basket contains a mix of 6 red sox and 12 brown sox. A boy starts picking one pair of sox at a time from the basket without looking at its colour. How many such picks atmost would it take for the boy to get a pair of red sox?

6. Complete the below series

5,6,7,8,10,11,14, ?

7. There are two mango trees such that one grows at 3/5th the speed of the other one. The total height of both trees combined in 4 years, would be 8 ft. Find the height that the shorter tree would have after 2 years.

8. All bikes are cars. Some cars are cycles. Then

All bikes are cycles.

All cycles are cars.

Some bikes are cycles.

None of these.

9. Peter and friends decide to go for a picnik to the farthest spot on a weekend. However due to a trouble with their cab, they could not exceed 8 hrs of travel a day. They could manage an average speed of 40 miles an hour in the forward lap and a 30 miles an hour during the return lap atributing it to heavy traffic on Sundays. How far would have been their picnik spot?

Practice For Tech Mahindra

Below are three conventional questions from areas and volumes. Conventional questions from areas and volumes can help you with your practice for placement papers of companies like Tech Mahindra. Though the below questions have been tagged under Tech Mahindra, similar questions can be expected in other placement papers too.

Question 1

The perimeter of a square and a rectangle is the same. If the rectangle is 12 cms. by 10 cms., then by what percentage is the area of the square more than that of the rectangle?

a) 1 b) 3 c) 5/6 d) 1/2

Answer : c) 5/6

Reason :

Given that Perimeters of square and rectangle are the same.

Perimeter of rectangle of size 12 cms and 10 cms is 2(Length + Breadth) = 2(12+10) = 44

Perimeter of square = 44. (4 x side of square)

Length of each side of the square = 44/4 =11

Area of the square = Side2 = 11 x 11 = 121 sq. meter

Area of the rectangle = Length X Breadth = 12 x 10 = 120 sq. meter

Percentage Increase of area of the square to that of the rectangle = (Area of Square - Area of Rectangle) / Area of Rectangle X 100 % = (121 - 120)/120 X 100 % = 5/6 %

Question 2

Capacity of a cylindrical vessel is 25,872 litres. If the height of the cylinder is 200% more than the radius of its base, what is the area of the base in square cms?

a) 336 b) 1232 c) 616 d) cannot be determined

Answer : c)616

Reason :

Let the radius be R and height be H

Height is 200% more than its radius.

This means H = R + 200% R = R (1 + 200/100) = 3 R

Volume of the cylinder (formula) = π R2H

It has been mentioned that volume of the cylinder is 25,872 cm3

22/7 R2H = 25,872 cm3

Substituting H = 3R we get

R = 14 cm

Area of the base = πR2 = 22/7 x 142 = 616 cm2

Question 3

If the radius of a circle is increased by 12%, then the area of the circle

a) decreases by 25.44%

b) increases by 25.44%

c) no change in area

d) decreases by 12%

Answer : b) increases by 25.44%

Reason :

Area of circle πr2 where r is the radius

Assume initially the radius was 10. Then area becomes 22/7x10x10 = 314.28 --> eq 1

Now if the radius is increased by 12%, it will become 10+(12/100)10 = 10+1.2=11.2

New area = 22/7 x 11.2x 11.2 = 394.24 --> eq 2

Increase in area in our case = eq 2 - eq 1 = 79.96

Percentage increase in area when radius is increased by 12% = Increase in Area / Original Area X 100% = 79.96 / 314.28 X 100 =25.44%

The Top IT Company Solved Placement Papers

Time & Work is a favourite area considering placement test of any big company like Wipro. You can always expect few questions from time and work section. Though tagged as wipro sample paper, one can expect these kinds of questions in other papers as well.

Question 1

Consider three people A,B and C. Let A and B can finish a job in 21 days, B and C in 14 days and A and C in 28 days. Who will take the least time when working independently ?

Options : 1) A 2) B 3) C 4) Can't be determined

Answer 1

Correct answer is B

Consider WA, WB and WC be the work done per day by A,B and C respectively. Then

WA + WB = 1/21 -- eq 1

WB + WC = 1/14 -- eq 2

WA + WC = 1/28 -- eq 3

Eq 2 - Eq 3 will give

WB - WA = 1/14 - 1/28 = 1/28 -- eq 4

Eq 1 + Eq 4 will give

2WB = 1/21 + 1/28 = 7/84

WB = 7/168

Sub value of WB in eq 1, we get

WA = 1/21 - 7/168 = 1/168.

Sub value of WA in eq 3, we get

wc = 1/28 - WA = 1/28 - 1/168 = 5/168

Since WB (work done by B per day) is greater when compared to WA and WB clearly B will be able to the maximum work on any given day and hence he should consume least amount of time when working independently.

Question 2

Consider two postmen A and B respectively. A is young and can deliver 20 parcels in 3 hours while B is older than A and can deliver only 15 parcels in 4 hours. If the total number of parcels to deliver is 60, how long they will take working together.

a. 121/12 hours b. 144/36 hours c. 144/25 hours d. 121/25 hours

Answer 2

Correct ans is option c. 144/25 hours.

A can deliver 20 parcels in 3 hours. Hence for 1 hour he can deliver 20/3 parcels.

B can deliver 15 parcel in 4 hours. Hence for 1 hour B needs 15/4 parcels.

When A and B work together, for 1 hour they can deliver, 20/3 + 15/4 parcles = 80 + 45 /12 = 125/12 parcels.

Hence to deliver 60 parcels they would require : 60 X 12/125 = 720/125 = 144/25 hours

Question 3

Consider a courier company A which can deliver 100 parcels in 5 days with 5 men working for 8 hours a day. Consider another courier company B where every employee is equally effecient as that of company B. Company B is short of one man when compared to A and has a policy of asking its workers to work only for 6 hours a day. How long (in days) company B will take to deliver 100 parcels.

Options : a. 8.3 b. 24 c. 12 d 6.6

Answer

Correct answer is a. 8.3 days

Total amount of work W = N x D X W

where N = number of men, D = number of days, W = amount of work per day

Applying the above formula for company A we get,

Work done by company A to deliver 100 parcels = 5 X 5 X 8 = 200 -- eq 1

Work done by company B to deliver 100 parcels = 4 X D x 6 = 24D -- eq 2

Since the work to be done is same in both the cases, eq 1 = eq2

or 200 = 24D or D = 8.3

4 Sample TCS Sentence Completion Questions

Dear Reader, sentence completion questions are the ones asking you to find contextually correct words (synonyms) to fill the given blanks. These types of placement questions can be expected on papers of several companies including TCS. Hence it is very essential to develop your vocabulary and the ability to pick the correct word in context.

Question 1

Value of currency started increasing which ultimately kick started __ (a. deflation / b. depreciation / c. disinflation) in economy.

Answer : a. deflation

Reason :Deflation is the term used to denote a fall in prices of goods indicating currency value rise. Though disinflation could appear close in context, it actually means a slow rise in inflation rather than an exact opposite of inflation.

Question 2

The introduction of number zero to mathematics is considered to be one of the greatest __ (a. innovations / b. inventions / c. discoveries) of all times.

Answer: a. innovations

Reason : Innovation means a change that could be considered to have brought a great positive change in some field. Hence innovation fits the context well. However, invention means to invent something new and discovery means to find something unknown.

Question 3

__ (a. incentives / b. bonuses /c. gifts) generally motivate people to carry out tasks in an efficient manner.

Answer: a. Incentives

Reason : Incentive means a motivating factor that encourages people to carry out their tasks efficiently. Though bonuses and gifts closely suit the context, they generally mean only monetary benefits whereas incentive can mean even non monetary benefits like appreciation.

Question 4

___ (a. Idiom / b. Connotation /c. Paradox) refers to words implying different meaning than the actual literal meaning.

Answer : b. Connotation

Reason : Connotation is where words actually mean something but their implied meaning would be different. For example think of the words 'warm reception'.

Wipro Type Conceptual Interview Questions

Dear Reader, in Wipro technical interviews, you may not only expect questions from facts but also you can expect questions asking you to explain the concepts. Below are 3 sample technical interview questions that can be used by you to prepare for Wipro and other similar interviews.

Question 1

In software applications, especially in JAVA based applications, how design patterns help after a problem/requirement is identified ?

Answer 1

Design pattern can be treated as a way or template to solve a problem depending upon the nature of the problem/requirement. Though they themselves cannot solve a problem, they provide greater insights into the best possible ways to solve them.

Question 2

Say two programs essentially dealing with solving same problem through similar algorithms. Let A be written using pointers and B be written using arrays. Which one will be memory efficient and which will be more readable.

Answer 2

A will be more memory efficient than B and B will be more readable than A. Reason : generally pointers are more memory efficient when used by an experienced programmer. And arrays are generally easily readable and can be easily understood by even beginner level programmer.

Question 3

What is the integrity constraint in SQL which when used ensures that values in a column of a table have a corresponding member on another column of another table.

Answer 3

Foreign Key is the answer (self explanatory as the question itself has got the explanation)

TCS Type 3 Facts & Concepts Interview Questions

You could expect questions on TCS interviews asking you to pick and explain a right answer based on the choices presented before you. These types of questions are not only limited to TCS but can be expected on several other companies placements/interviews as well.

Question 1

Which of the C variable qualifiers amongst const and Volatile provides more data safety ? Explain the reason.

Answer 1

const is the qualifier that provides more data security by throwing error when an accidental attempt is made to modify the same.

Question 2

Which is more memory efficient in generic sense - Arrays or Linked Lists ?

Answer 2

Actually, there is no significant difference in memory requirement for arrays and linked lists as both increase with increase in data. (However, linked lists are generally easier to work with dynamic data)

Question 3

Among function declaration and function definition which of the following gives first hand information to the compiler about its return data type and arguments.

Answer 3

Function declaration is the answer, as it precedes function definition. With function declaration, the compiler can get to know about its return data type, the number and type of the arguments etc.