Bently placement papers 

Mathematical questions

Given matrix A and I(identity matrix). Find matrix B where 
AB=I. 

1.                   y=log(sinx), find dy/dx. 

2.                   B is 8 Km  East to  A, C is 6 Km north 
to B, D is 16 Km east to C and E is 12 Km north of D, Find 
distance between A and E. 

3.                   A train is moving with the velocity of 
x Km per hr. it crosses a station of length y Km in 

4.                   z meter per second. Find the length of 
the train.( here x, y and z are given)  

5.                   The ratio of length of a rod and its 
shadow is 1/sqrt(3). Find the angle of elevation. 

6.                   Find LCM 120 and 60. 

7.                   4(144)8, 3(x)7 find x. 

8.                   For the given fig ,find the angle x. 
All angles are in degree. 

 
 

  

10.               limit x->¥ [(x+6)/(x-1)][(x+6)/(x-1)] 

  >>>> There are 20 such questions. Questions are very 
easy. 
Bently ----c questions

 Section-2 consists of some questions from microprocessor, 
digital electronics, one question on turing machine(the 
question was very long) and some questions on C(some what 
tricky-but solvable if  enough time is left) 

 Some questions which I remember are- 

1.                   Find sqrt of 113 upto 3 decimal 
places. 

2.                   20 bit address bus can address how 
much memory 

3.                   find 2?s complement of 111001001 

4.                   Conver 100011 in decimal 

5.                   (120)10  to (x)7 

6.                   To represent A to Z and 0 to 9 how 
many bits are required. Assuming all the characters 
requires equal bits. 

7.                   210 =??Kilo byte 

8.                   A op B = XXXX00XXXXXX0XXX 

Find B and op, where op is a logical operator and X=don?t 
care 

9.                   To add 16 bits numbers how many full 
adders and half adders are required. 

10.               A full adder has how many input lines. 

11.               Find Y
 
   

 
 

#define count(x) sizeof(x)/sizeof(x[0]) 
what count(x) does? 

X=24, Y=16 
X^=Y 

Y^=X 

X^=X 

Y^=X 

Find value of X and Y( the exact question may be some what 
different) 

14.               #define inum 53268 

 While(???.) 

{  

inum=inum &(inum-1); 

. 

. 

. 

. 

}  

15.               Write a program which will accept 
only ?0? to ?9?, ?+?, ?-?, ?#? characters as inputs. 

16.               In a circuit of gates all gates are 
controlled by a single ????? 

17.               How many inputs are there in a NOT gate 


Bently placement papers