All questions of Cognizant for Interview Preparation Exam

A can do a work in 8 days, B can do a work in 7 days, C can do a work in 6 days. A works on the first day, B works on the second day and C on the third day rely. that is  they work on alternate days. When will they finish the work.(which day will they finish the work) (7+7/168)

Correct answer is '8'. Can you explain this answer?

Sagar Sharma answered

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Argentina had football team of 22 player of which captain is from Brazilian team and goalki from European team. For remaining player they have picked 6 from Argentinean and 14 from European. Now for a team of 11 they must have goalki and captain so out of 9 now they plan to select 3 from Argentinean and 6 from European. Find out number of methods available for it.

Correct answer is '160600'. Can you explain this answer?

Anaya Patel answered

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A batsman scores 23 runs and increases his average from 15 to 16. Find the runs to be made if he wants top Inc the average to 18 in the same match. 

Correct answer is '39'. Can you explain this answer?

Arya Roy answered

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Argentina had football team of 22 player of which captain is from Brazilian team and goalie from European team. For remaining player they have picked 6 from argentine and 14 from European. Now for a team of 11 they must have goalie and captain so out of 9 now they plan to select 3 from Argentinean and 6 from European. Find out no of   methods available for it. 

Correct answer is '160600'. Can you explain this answer?

Sagar Sharma answered

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Four persons can cross a bridge in 3, 7, 13, 17 minutes. Only two can cross at a time. Find the minimum time taken by the four to cross the bridge. 

Correct answer is '20'. Can you explain this answer?

Yash Patel answered

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A+B+C+D=D+E+F+G=G+H+I=17 where each letter represent a number from 1 to 9. Find out what does letter D and G represent if letter A=4. 

• a)
  D=5 G=1
• b)
  D=7 G=1
• c)
  D=2 G=1
• d)
  D=3 G=1

Correct answer is option 'A'. Can you explain this answer?

Lavanya Menon answered

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After his fathers death, writer Laurence Yep returned to San Francisco to look for the apartment house where his family had lived, which also housed their grocery store. It had been replaced by a two-story parking garage for a nearby college. There were trees growing where the store door had been. I had to look at the street signs on the corner to make sure I was in the right spot. Behind the trees was a door of solid metal painted a battleship gray Stretching to either side were concrete walls with metal grates bolted over the openings in the sides. The upper story of the garage was open to the air but through the grates I could look into the lower level. The gray, oil-stained concrete spread onward endlessly, having replaced the red cement floor of our store. 

Lines marked parking places where my parents had laid wooden planks to ease the ache and chill on their feet. Where the old-fashioned glass store counter had been was a row of cars. I looked past the steel I-beams that formed the columns and ceiling of the garage, peering through the dimness in an attempt to locate where my fathers garden had been; but there was only an endless stretch of cars within the painted stalls. We called it the garden though that was stretching the definition of the word because it was only a small, narrow cement courtyard on the north side of our apartment house. There was only a brief time during the day when the sun could reach the tiny courtyard; but fuchsia bushes, which loved the shade, grew as tall as trees from the dirt plot there. 

Next to it my father had fashioned shelves from old hundred-pound rice cans and planks; and on these makeshift shelves he had his miniature flower patches growing in old soda pop crates from which he had removed the wooden dividers. He would go out periodically to a wholesale nursery by the beach and load the car with boxes full of little flowers and seedlings which he would lovingly transplant in his shadowy garden. If you compared our crude little garden to your own backyards, you would probably laugh; and yet the cats in the neighborhood loved my fathers garden almost as much as he did--to his great dismay The cats loved to roll among the flowers, crushing what were just about the only green growing things in the area. Other times, they ate them-perhaps as a source of greens. Whatever the case, my father could have done without their destructive displays of appreciation. 

I dont know where my father came by his love of growing things. He had come to San Francisco as a boy and, except for a brief time spent picking fruit, had lived most of his life among cement, brick, and asphalt. I hadnt thought of my fathers garden in years; and yet it was the surest symbol of my father. Somehow he could persuade flowers to grow within the old, yellow soda pop crates though the sun seldom touched them; and he could coax green shoots out of what seemed like lifeless sticks. His was the gift of renewal. However, though I stared and stared, I could not quite figure out where it had been. Everything looked the same; more concrete and more cars. Store, home and garden had all been torn down and replaced by something as cold, massive and impersonal as a prison. 

Even if I could have gone through the gate, there was nothing for me inside there. If I wanted to return to that lost garden, I would have to go back into my own memories. Award-winning author Laurence Yep did return to his fathers garden in his memories. In 1991 he published The Lost Garden an autobiography in which he tells of growing up in San Francisco and of coming to use his writing to celebrate his family and his ethnic heritage.

Q. What do you know about the fathers garden?

• a)
  It grew in spite of being  neglected.
• b)
  The cats would eat all the plants before they grew
• c)
  It flourished in an unlikely spot.
• d)
  It didnt grow well because of lack of sun.

Correct answer is option 'D'. Can you explain this answer?

Sagar Sharma answered

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If [x] indicates integral of x i.e is the largest integer less than x and |x| indicates absolute value of x then what is the maximum value  of [x]/|x|.

• a)
  1 
• b)
  0  
• c)
  -1  
• d)
  None of these  

Correct answer is option 'A'. Can you explain this answer?

Aarav Sharma answered

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Directions for Questions 12 to 14:

One of the four sentences given in each question is grammatically wrong. Find the incorrect sentence.

• a)
  the odds are against him.
• b)
  Let me thread the needle .
• c)
  A nurse is taking care of him.
• d)
  I dont know if snow is falling.

Correct answer is option 'D'. Can you explain this answer?

Sagar Sharma answered

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2, 3, 6, 7--- using these numbers form the possible four digit numbers that are divisible by 4.  

Correct answer is '8'. Can you explain this answer?

Aarav Sharma answered

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A man sells apples. First he gives half of the total apples what he has and a half apple. Then he gives half of the remaining and a half apple. He gives it in the same manner. After 7 times all are over. How many apples did he initially have?

Correct answer is '127'. Can you explain this answer?

Aarav Sharma answered

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Directions for Questions 1 to 5:

Read the passage and answer the questions that follow on the basis of the information provided in the passage.

For a period of more than two centuries paleontologists have been intrigued by the fossilized remains of pterosaurs, the first flying vertebrates. The issues, which puzzle them, are how these heavy creatures, having a wingspan of about 8-12 meters managed the various problems associated with powered flight and whether these creatures were reptiles or birds. Perhaps the least controversial assertion about the pterosaurs is that they were reptiles. Their skulls, pelvises, and hind feet are reptilian. The anatomy of their wings suggests that they did not evolve into the class of birds. In pterosaurs a greatly elongated fourth finger of each forelimb supported a wing like membrane. 

The other fingers were short and reptilian, with sharp claws. In birds the second finger is the principal strut of the wing, which consists primarily of feathers. If the pterosaurs walked on all fours, the three short fingers may have been employed for grasping. When a pterosaurs walked or remained stationary, the fourth finger, and with it the wing, could only urn upward in an extended inverted V- shape along each side of the animals body. In resemblance they were extremely similar to both birds and bats, with regard to their overall body structure and proportion. This is hardly surprising as the design of any flying vertebrate is subject to aerodynamic constraints. Both the pterosaurs and the birds have hollow bones, a feature that represents a savings in weight. 

There is a difference, which is that the bones of the birds are more massively reinforced by internal struts. Although scales typically cover reptiles, the pterosaurs probably had hairy coats. T.H. Huxley reasoned that flying vertebrates must have been warm-blooded because flying implies a high rate of metabolism, which in turn implies a high internal temperature. Huxley speculated that a coat of hair would insulate against loss of body heat and might streamline the body to reduce drag in flight. The recent discovery of a pterosaur specimen covered in long, dense, and relatively thick hair like fossil material was the first clear evidence that his reasoning was correct. 

Some paleontologists are of the opinion that the pterosaurs jumped from s dropped from trees or perhaps rose into the light winds from the crests of waves in order to become airborne. Each theory has its associated difficulties. The first makes a wrong assumption that the pterosaurs hind feet resembled a bats and could serve as hooks by which the animal could hang in preparation for flight. The second hypothesis seems unlikely because large pterosaurs could not have landed in trees without damaging their wings. The third calls for high aces to channel updrafts. The pterosaurs would have been unable to control their flight once airborne as the wind from which such waves arose would have been too strong.

Q. As seen in the above passage scientists generally agree that:

• a)
  the pterosaurs could fly over large distances because of their large wingspan.
• b)
  a close evolutionary relationship can be seen between the pterosaurs and bats, when the structure of their skeletons is studied.
• c)
  the study of the fossilized remains of the pterosaurs reveals how they solved the problem associated with powered flight
• d)
  the pterosaurs were reptiles
• e)
  Pterosaurs walked on all fours.

Correct answer is option 'D'. Can you explain this answer?

Sagar Sharma answered

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Directions for Questions 35 to 39:

Convert the given binary numbers.

Q. (1110 0111)2 = ( )16

Correct answer is '(E7)16'. Can you explain this answer?

Aarav Sharma answered

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Using the digits 1,5,2,8 four digit numbers are formed and the sum of all possible such numbers.

Correct answer is '106656'. Can you explain this answer?

Aarav Sharma answered

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For a period of more than two centuries paleontologists have been intrigued by the fossilized remains of pterosaurs, the first flying vertebrates. The issues, which puzzle them, are how these heavy creatures, having a wingspan of about 8-12 meters managed the various problems associated with powered flight and whether these creatures were reptiles or birds. Perhaps the least controversial assertion about the pterosaurs is that they were reptiles. Their skulls, pelvises, and hind feet are reptilian. The anatomy of their wings suggests that they did not evolve into the class of birds. In pterosaurs a greatly elongated fourth finger of each forelimb supported a wing like membrane. 

The other fingers were short and reptilian, with sharp claws. In birds the second finger is the principal strut of the wing, which consists primarily of feathers. If the pterosaurs walked on all fours, the three short fingers may have been employed for grasping. When a pterosaurs walked or remained stationary, the fourth finger, and with it the wing, could only urn upward in an extended inverted V- shape along each side of the animals body. In resemblance they were extremely similar to both birds and bats, with regard to their overall body structure and proportion. This is hardly surprising as the design of any flying vertebrate is subject to aerodynamic constraints. Both the pterosaurs and the birds have hollow bones, a feature that represents a savings in weight. 

There is a difference, which is that the bones of the birds are more massively reinforced by internal struts. Although scales typically cover reptiles, the pterosaurs probably had hairy coats. T.H. Huxley reasoned that flying vertebrates must have been warm-blooded because flying implies a high rate of metabolism, which in turn implies a high internal temperature. Huxley speculated that a coat of hair would insulate against loss of body heat and might streamline the body to reduce drag in flight. The recent discovery of a pterosaur specimen covered in long, dense, and relatively thick hair like fossil material was the first clear evidence that his reasoning was correct. 

Some paleontologists are of the opinion that the pterosaurs jumped from s dropped from trees or perhaps rose into the light winds from the crests of waves in order to become airborne. Each theory has its associated difficulties. The first makes a wrong assumption that the pterosaurs hind feet resembled a bats and could serve as hooks by which the animal could hang in preparation for flight. The second hypothesis seems unlikely because large pterosaurs could not have landed in trees without damaging their wings. The third calls for high aces to channel updrafts. The pterosaurs would have been unable to control their flight once airborne as the wind from which such waves arose would have been too strong.

Q. According to the passage, some scientists believe that pterosaurs

• a)
  Lived near large bodies of water
• b)
  Had sharp teeth for tearing food
• c)
  Were attacked and eaten by larger reptiles
• d)
  Had longer tails than many birds
• e)
  Consumed twice their weight daily to maintain their body temperature.

Correct answer is option 'A'. Can you explain this answer?

Sagar Sharma answered

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If the vertices of the triangle are A(1,2), B(-2,-3) and C(2,3)  then which is the largest angle?

• a)
  Angle(ABC) 
• b)
  Angle(BAC) 
• c)
  Angle(ACB) 
• d)
  None 

Correct answer is option 'B'. Can you explain this answer?

Aarav Sharma answered

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A cube is coloured orange on one face, pink on the opposite face, brown on one face and silver on a face adjacent to the brown face. The other two faces are left uncoloured. It is then cut into 125 smaller cubes of equal size. now, answer the following questions based on the above statements:

Q. How many cubes one coloured silver on one face, orange or pink on another face and have four uncoloured faces?

• a)
  8
• b)
  10
• c)
  12
• d)
  16

Correct answer is option 'A'. Can you explain this answer?

What is the sum of even numbers in the group where 5 is present?

• a)
   4  
• b)
  10  
• c)
  12  
• d)
  14 

Correct answer is option 'B'. Can you explain this answer?

If the 4 numbers are arranged in all possible orders then how many solutions are possible.

• a)
  ONE 
• b)
  TWO 
• c)
  THREE 
• d)
  NONE 

Correct answer is option 'A'. Can you explain this answer?

In the above question what is the minimum value of [x]/|x|.

• a)
   1  
• b)
  0  
• c)
  -1  
• d)
  None of these  

Correct answer is option 'D'. Can you explain this answer?