OnMobile Asia Pacific Pvt Ltd Placement paper -2

Onmobile is a sister concern of Infosys. It was part of Infosys till June, 2000 and now it's separate. But seems to be a good company. The Bangalore office in inside Infosys office, Electronics City.

They are dealing with Mobile communciation.

Starting pay for freshers may be around Rs 17,000 per month (not sure).

Exam is of Infosys written test type. But with negative marking. So, be careful and attempt only those questions you are confident of the right answer.

Total no of puzzles : 6, for total of 50 marks. (Each question has different marks)

The questions may be reasonably tough. Some questions may come directly from Shankula Devi books.

So refer Shankula Devi puzzle books (Puzzles to Puzzle You, More Puzzles), George Summers puzzle book.

Also prepare Analytical questions in : "GRE : Barrons" (Old editions of book, because no Analytical questions in new GRE pattern).

You can expect probability questions mostly.

If u answer 4 questions correctly, you may get the interview.



In interview : They are mainly asking about B.Tech project, Puzzles and few questions on Oracle.




Where to apply ?
Visit the WebSite : http://www.onmobile.com

Check out the openings at : http://www.onmobile.com/career.html

Apply to : jobs@onmobile.com






Some Previous Questions
Note: The questions may not be complete. They are just to give you an idea of how the test will be.

A, B, C are three persons. among these 3 persons only one is having a key to open a treasure. Each person always either speaks truth or lies. The three persons made the following statements.

A: I have the key

B: I dont have the key

C: B dont have the key.

Among the three, atleast one always speak truth. Find out who got the key?

(4 Marks)

A train is travelling from A to B. During its travel it met with an accident after travelling for half an hour. After the accident it travels with 3/5th of its original speed and arrives the destination two hours late. If accident occurs 50 km farther it will arrive the destination by 40 mins late. Then find the distance between A and B?

(6 Marks)

A starts from x to y at noon. his friend B, starts from y to x at 2 pm and met him at 4:05 pm and then both of them reached their destinations at the same time. Find arrival time.

(8 Marks)

There are innumerable packets of neggets each of which contain either 3 or 6 or 9 nuggets. You cannot break a packet ( i.e., u can not have 1 or 2 nuggets, they are available only in packets of 3, 6 and 9).

Problem is to find a number N starting from which it is possible to get any number of nuggets without breaking any of the packets.

(12 Marks)

Ans : There is no such number exists. It's not possible to find out. So, answer should be "Infinite".

An item x is available in 6,9,20 peices of packets. A customer purchased least N peices such that N+1, N+2, N+3.......peices also can be purchased. Find N.

(12 Marks)

Ans : 44

(This answer is absolutely right. Find out a method how to solve it. If you have a method which works for all such kinds of problems, mail to me at : nchetana123@yahoo.com)

Three ants are present on the 3 vertices of triangle.They need to change their positions. what is probability of getting their positions changed with the condition that no two ants collide each other while exchanging their positions.

You need to chose "n" numbers such that their sum is 100 and they give the maximum product when multiplied.

A business guy got 4 weigths and he can weight up to 40 kgs. What are denominations ?

Ans : 1,3,9,27

In a game where three dice are thrown, a player guesses a number. If the guessed number appears on only one die, he gets double amount. If the guessed number appears on two dies, he gets thrice the amount. If the guessed number appears on three dies, he quadraples his money. Find the probability to win triple or quadraple amount of the bet.

(8 Marks)

Tom, Dolly and Mouly are living in a street having door numbers 1-99. But they dont know each others house numbers.

Mouly asked Tom, "is your dno a perfect square?". He replied.

Again she asked, "is it greater than 50?". He replied.

With this information she went to Tom house, but she could not find out his address. Then she realizes that the second answer is only the correct one.

Then dolly, who is unaware of the above conversation, asked Tom, "Is ur dno a perfect cube?". He replied.

Again she asked, "is it greater than 25?". He replied.

With this information she went to Tom house, but she could not find out his address. Then she realizes that the second answer is only the correct one.

If sum of door numbers of the three is equal to a perfect square multiplied with 2. Tom's door number is less than that of Dolly.

Also Tom's door number is less than that of Mouly. Then find out the door numbers of all the three people.

(12 Marks)




Question Paper of the Written Test held on : 2 nd March 2003 at Bangalore
Note: The questions may not be complete. They are just to give you an idea of how the test will be.

How to weigh 1 to 40kg (whole numbers) with only 4 different weighing stones on a simple balance.

What are denominations ?

Ans : 1,3,9,27

A train travels from A to B .on the way from A to B,after traveling for 1 hr the train has an accident and the rest of the journey it travels with 3/5 of its original speed and reaches 2 hrs late. If the accident has occurred 50 km further it would have reached 40 minutes earlier. What is the distance between A and B ?

A murder occurred in atrain.The murdered is Mr X. The people investigated gave the following statements.

Old Man : I’m innocent . I saw Blonde woman talking to Mr X

Blonde Woman : I’m innocent . I didn’t talk with Mr X.

Young Man : I’m innocent . The brunette woman killed Mr X.

Brunette Woman : I’m innocent . One of the men is the murderer.

There are 4 true and four false statements .

Who is the murderer?

Ajay and Vijay divided some apples between themselves.

Vijay says : You have more apples than me .

Then Ajay gives Vijay one apple each for Vijay's age.

Then Vijay says : You have 2 times the apples that I have.

And Ajay replies that : it is fair since my age is twice your age.

When Ajay leaves, Vijay takes as many apples equal to Ajay's age.

Who has more number of apples ?

3 dice each with a number from 1 to 6 are rolled one after another. A person can bet mony on any one of the numbers If the number turns out on only die then he receives his amount along with the same amount as he invested. If the number turns out on any 2 dice then he gets his money back along with twice the money he had bet. If the number turns out on all 3 dice then he gets his money back along with trice the same money.

What is the probability of tripling and quadrupling his money ?

X puts some black and white balls in a bag. Y picks a ball from the bag and finds it to be black. He picks out another ball and finds it also to be black. He asks what would be probability of a third black ball for which X replies that it is 9/10 of the probability of the original trail. Y knows that there are atleast 7 balls in the bag originally.

How many balls of each color are there originally ?