DELL PLACEMENT PAPER-4

DELL PLACEMENT PAPER-4

Company wise Placement Papers for freshers to understand and prepare for written test of various companies.


26) Anoop managed to draw 7 circles of equal radii with their centers on the diagonal of a square such that the two extreme circles touch two sides of the square and each middle circle touches two circles on either side. Find the ratio of the radius of the circles to the side of the square.

a) 1:(4+ 7v3)  b) 1:(2+ 6v2)
c) 1:(2+ 7v2)  d) (2+ 7v2):1
Ans: b

27) 10 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The rightmost person is not questioned. Which of the following possibilities are true?

A) All suspects are lying
B) leftmost suspect is guilty

a) Neither A nor B
b) Both A and B
c) B only
d) only a

Ans: C

28) There are 1000 pillars for a temple. 3 friends Linda, Chelsea, Juli visited that temple. (Som unrelated stuff) Linda is taller than Chelsea and taller than 2 of 1000 pillars. Juli is shorter than Linda. Find the correct sentence?

a) Linda is shorter among them
b) Chelsea is taller than Juli
c) Chelsea is shorter than Juli
d) Cannot determine who is taller among Chelsea and Juli

Ans: d

Friends there is a trick of solving this questions any question in the paper of TCS that involves comparison the answer is always –cannot determine

29) Horse started to chase dog as it relieved stable two hrs. ago.  And horse started to ran with average speed 22km/hr., horse crossed 10 mts road and two small pounds with depth 3m, and it crossed two small street with 200 mts length. After traveling 6 hrs., 2hrs after sunset it got dog. compute the speed of dog?

Ans: As we have speed and travel time of horse, we can get distance travelled by it.
Hence d = 22*6 = 132km,

Exactly this 132km was travelled by dog in 8 hours (as it started two hours earlier).
Hence speed of dog = 132/8 = 16.5km/hr

Ans: 16.5km/hr.

30) Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The minimum value of n1(P) over all configurations P of 5 points in the plane in general position (.i.e. no three points in P lie on a line) is

a) 3   b)  5  c)   2

Ans: 5

Friends there is a trick of solving this questions any question in the paper of  TCS that involves points separated by line with a set of points points each side the answer is the  number of points in plane as 5 here the answer is always –cannot determine

31) Alok and Bhanu play the following min-max game. Given the expression
N =9+ X + Y - Z

Where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu
would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be

a) 0 b) 27 c) 18 d) 20

Ans: 20

Here it is X+Y-Z  then add the 11 so ans is (11+9)=20