All questions of L & T Infotech for Interview Preparation Exam

The Great Wall of China Walls and wall building have played a very important role in Chinese culture. These people, from the dim mists of prehistory have been wall-conscious; from the Neolithic period  when ramparts of pounded earth were used - to the Communist Revolution, walls were an essential part of any village. 
Not only towns and villages; the houses and the temples within them were somehow walled, and the houses also had no windows overlooking the street, thus giving the feeling of wandering around a huge maze. The name for city in Chinese (cheng) means wall, and over these walled cities, villages, houses and temples presides the god of walls and mounts, whose duties were, and still are, to protect and be responsible for the welfare of the inhabitants. Thus a great and extremely laborious task such as constructing a wall, which was supposed to run throughout the country, must not have seemed such an absurdity. 
However, it is indeed a common mistake to perceive the Great Wall as a single architectural structure, and it would also be erroneous to assume that it was built during a single dynasty. For the building of the wall spanned the various dynasties, and each of these dynasties somehow contributed to the refurbishing and the construction of a wall, whose foundations had been laid many centuries ago. It was during the fourth and third century B.C. that each warring state started building walls to protect their kingdoms, both against one another and against the northern nomads. Especially three of these states: the Chin, the Chao and the Yen, corresponding respectively to the modern provinces of Shensi, Shanzi and Hopei, over and above building walls that surrounded their kingdoms, also laid the foundations on which Chin Shih Huang Di would build his first continuous Great Wall. The role that the Great Wall played in the growth of Chinese economy was an important one. 
Throughout the centuries many settlements were established along the new border. The garrison troops were instructed to reclaim wasteland and to plant crops on it, roads and canals were built, to mention just a few of the works carried out. All these undertakings greatly helped to increase the countrys trade and cultural exchanges with many remote areas and also with the southern, central and western parts of Asia  the formation of the Silk Route. Builders, garrisons, artisans, farmers and peasants left behind a trail of objects, including inscribed tablets, household articles, and written work, which have become extremely valuable archaeological evidence to the study of defense institutions of the Great Wall and the everyday life of these people who lived and died along the wall.
Q. Constructing a wall that ran the length of the country
  • a)
    Honoured the god of walls and mounts
  • b)
    Was an absurdly laborious task
  • c)
    May have made sense within Chinese culture
  • d)
    Made the country look like a huge maze
Correct answer is option 'B'. Can you explain this answer?

Chinese cities resembled a maze
*
because they were walled.
because the houses have no external windows.
because the name for cities means 'wall'.
because walls have always been important there.

A company rented a machine for Rs.700/- a month. Five years later the treasurer calculated that if the company had purchased the machine and paid Rs.100/- monthly maintenance charge, the company would have saved Rs.2000/-. What was the purchase price of the machine?
    Correct answer is '34000'. Can you explain this answer?

    Kavya Saxena answered
    Lets assume the price of the machine = x rupee
    5 year maintenance charge = 100*60 = 6000
    so total investment = x+6000
    now total rental charges for five year = 700*60 = 42000
    so according to given condition 42000-x-6000 = 2000 so x = 34000

    The ratio of the ages of a man and his wife is 4 : 3, After 4 years, this ratio will be 9 : 7. If at the time of marriage, the ratio was 5 : 3, then how many years ago were they married?
    • a)
      8 years 
    • b)
      10 years 
    • c)
      15 years 
    • d)
      None of These
    Correct answer is option 'C'. Can you explain this answer?

    Arya Roy answered
    Suppose present age of man = 4x years
    Present age of his wife = 3x years
    After 4 years
    4x + 4/3x + 4 = 9/7
    = 28x + 28 = 27x + 36
    = 28x - 27x = 36 - 28
    therefore, x = 8
    Present age of man = 4x
    = 4 x 8 = 32 years
    Present age of his wife = 3x
    = 3 x 8 = 24

    Suppose, they were married y years ago
    According to question,
    32-y/24-y = 5/3
    = 96 - 3y = 120-5y
    = 5y - 3y = 120-96
    = 2y = 24
    y = 12

    A person meets a train at a railway station coming daily at a particular time . One day he is late by 25 minutes, and he meets the train 5 k.m. before the station. If his speed is 12 kmph, what is the speed of the train?
    • a)
      60 kmph
    • b)
      50 kmph
    • c)
      70 kmph
    • d)
      40 kmph
    Correct answer is option 'A'. Can you explain this answer?

    Aarav Sharma answered
    Given:
    - The person meets a train at a railway station coming daily at a particular time.
    - One day he is late by 25 minutes, and he meets the train 5 km before the station.
    - His speed is 12 kmph.

    To find: The speed of the train.

    Assumption: Let the speed of the train be x kmph.

    Concept used: Distance = speed × time.

    Calculation:
    Let's assume that the person normally meets the train at the station at time t.
    On the day when he is late, he meets the train 25 minutes later, i.e., at time t + 25 minutes.
    Let's say the distance between the person and the station is d.
    According to the question, the person meets the train 5 km before the station.
    Therefore, the distance between the person and the station on that day = d - 5 km.
    The time taken by the person to cover this distance = (d - 5) / 12 hours.
    The time taken by the train to cover the distance between the person and the station = 25 / 60 hours (25 minutes).
    So, the distance covered by the train in 25 minutes = x × 25/60 km.
    According to the question, the person meets the train 5 km before the station.
    Therefore, the distance covered by the person = d - 5 km.
    Equating the distance covered by the person and the train, we get:
    d - 5 = x × 25/60
    Solving for d, we get:
    d = 5 + x × 25/60
    Equating the time taken by the person and the train, we get:
    (d - 5) / 12 = 25 / 60
    Substituting the value of d, we get:
    (5 + x × 25/60 - 5) /12 = 25 / 60
    Simplifying, we get:
    x = 60 kmph

    Therefore, the speed of the train is 60 kmph.

    Answer: Option (a) 60 kmph.

    A man owns 2/3 of the market research beauro business and sells 3/4 of his shares for Rs. 75000. What is the value of Business?
      Correct answer is '150000'. Can you explain this answer?

      Aarav Sharma answered
      Problem Statement

      A man owns 2/3 of the market research bureau business and sells 3/4 of his shares for Rs. 75000. What is the value of the business?


      Solution

      Let's assume the total value of the business to be x.


      Fraction of business owned by the man

      As per the problem statement, the man owns 2/3 of the business.

      Therefore, the value of 2/3 of the business is:

      2/3 * x = (2x)/3


      Selling 3/4 of his shares

      The man sells 3/4 of his shares, which means he is now left with 1/4 of his original shares.

      Therefore, the value of 1/4 of the business is:

      1/4 * x


      Value of shares sold

      The man sells 3/4 of his shares for Rs. 75000. This means the value of 1/4 of his shares is also Rs. 75000.

      Therefore, the value of 2/3 of the business minus the value of 1/4 of the business is equal to Rs. 75000.

      Mathematically, it can be written as:

      (2x)/3 - x/4 = 75000


      Finding the value of x

      Solving the above equation for x:

      (8x)/12 - (3x)/12 = 75000

      (5x)/12 = 75000

      x = 75000 * 12/5

      x = 180000


      Final Answer

      The value of the market research bureau business is Rs. 150000.

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