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Home » Placement Papers » De Shaw Placement Papers » De Shaw Placement Paper

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De Shaw Placement Paper


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DESHAW 03 Paper

* 20 QUESTIONS , EACH QUESTION CARRIES 2 MARKS

1. A SOLID ICE OF 11 X 8 X2 INCHES IS MADE INTO ROD OF DIA 4 INCH. WHAT
IS THE LENGE OF ROD?

ANS: 3.5 INCH

2. THERE WERE 750 PEOPLE WHEN THE FIRST SONG WAS SUNG. AFTER EACH
SONG 50 PEOPLE ARE LEAVING THE HALL. HOWMANY SONGS ARE SUNG TO MAKE
THEM ZERO?

ANS:16

3. A PERSON IS CLIMBING OF 60 MTS . FOR EVERY MINUTE HE IS CLIMBING 6 MTS
AND SLIPPING 4 MTS . AFTER HOWMANY MINUTES HE MAY REACH THE TOP?

ANS: (60-6)/2 +1 :28

4. HOWMANY ZEROS ARE THERE IN THE PRODUCT OF THE INTEGER FROM 1TO 100?

ANS: 24( NOT GIVEN)

1 TO 10 -2 ZEROS
21 TO 30 -3 ZEROS : BECAUSE 25 = 5*5
22 *5
24 *5

5. A CAN DO WORK IN 2 HOURS B CAN DO A WORK IN 3 HOURS WHAT IS THE 
SHORTEST TIME TYEY CAN FINISH THE WORK?

ANS: 1HOUR 12 MIN.

6..SALARY IS INCREASED BY 1200 ,TAX IS DECREASED FROM 12% TO 10% BUT PAYING
SAME AMOUNT AS TAX . WHAT IS THE PREVISIOUS SALARY?

ANS:6000

7. THE LEAST NO. WHICH IS WHEN DEVIDED BY 4,6,7 LEAVES A REMAINDER OF 2 ?

ANS: 86

8. A MAN DRIVING THE CAR AT TWICE THE SPEED OF AUTO ONEDAY HE WAS DRIVEN 
CAR FOR 10 MIN. AND CAR IS FAILED. HE LEFT THE CAR AND TOOK AUTO TO GOTO 
THE OFFICE . HE SPENT 30 MIN. IN THE AUTO. WHAT WILL BE THE TIME TAKE BY 
CAR TO GO OFFICE?

ANS:25 MIN

9. A REPORT HS 20 WHEETS, EACH OF 55 LINES AND EACH SU;CH A LINE CONSISTS
OF 65 CHARACTERS. IF THE REPORT HAS TO BE RETYPED WITH EACH SHEET HAVING 65 
LINES AND EACH LINE HAVE 75 CHARACTERS, THE PERCENTAGE OF REDUCTION OF
NO OF SHEETS IS CLOSEST IS TO?


ANS: 25%



10. OUT OF 100 FAMILIES IN NEIGHBOUR HOOD , 55 OWN RADIO, 75 OWN T.V
AND 25 OWN VCR. ONLY 10 FAMILIES HAVE ALLOF THESE, AND EACH VCR OWNER
HAS TV . IF 25 FAMILIES HAVE THE RADIO ONLY, THE NO. OF FAMILIES HAVE
ONLY TV ARE?

ANS: 30




APTITUDE: ( QUESTIONS 16 T019)

KYA KYA IS AN ISLAND IN THE SOUTH PACIFI . THE INHABITANTS OF KYA KYA
ALWAYS ANSWER ANY QUESTION WITH TWO SENTENCES, ONE OR WHICH IS ALWAYS
TRUE AND OTHER IS ALWAYS FALSE.

1. YOU ARE WALKING ON THE ROAD AND COME TO A FORK. YOU ASK ,THE INHABITANTS
RAM.LAXMAN, AND LILA AS" WHICH ROAD WILL TAKE ME TO THE VILAGE?

RAM SAYS: I NEVER SPEAK TO STRANGERS. IAM NEW TO THIS PLACE
LAXMAN SAYS: IAM MARRIED TO.LILA. TAKE THE LEFT ROAD
LILA SAYS: IAM MARRIED TO RAM. HE IS NOT NEW TO THIS PLACE

ANS: LEFT ROAD TAKE YU TO THE VILLAGE

2. YOU FIND THAT YOUR BOAT IS STOLLEN. U QUESTIONED THREE INHABITANTS OT 
ISLANDS AND THEIR REPLIES ARE

JOHN : I DIDNOT DO IT. MATHEW DIDNOT DO IT
MATHEW : I DIDNOT DO IT. KRISHNA DIDNOT DO IT
KRISHNA: I DID NOT DO IT; I DONOT KNOW WHO DID IT

ANS: MATHEW STOLEN THE BOAT

3. YOU WANT TO SPEAK TO THE CHIEF OF VILLAGE , U ASK THREE FELLOWS AMAR
BOBBY, CHARLES AND BOBBY IS WEARING RED SHIRT

AMAR : IAM NOT BOBBY`S SON ; THE CHIEF WEARS RED SHIRT
BOBBY : IAM AMARS FATHER ; CHARLES IS THE CHIEF
CHARLES : THE CHIEF IS ONE AMONG US; IAM THE CHIEF

ANS: BOBBY IS THE CHIEF

4. THERE IS ONLY OPNE POLOT IN THE VILLAGE(ISLAND). YOU INTERVIEWED THREEM MAN 
KOISK ,LORRY AND MISHRA
U ALSO NOTICE THAT KOISK IS WEARING CAP.

M SAYS : LARRY IS FATHER IN THE PILOT .LARRY IS NOT THE PRIESTS SON
KOISK : IAM THE PRIEST ON THEIS ISLAND ONLY PRISTS CAN WEAR THE CAPS
LARRY : IAM THE PRIEST SON . KOISK IS NOT THE PREST

ANS : KOISK IS THE PILOT






THIS PAPER HAS GIVEN IN IIT DELHI , SO GO THROUGH THIS IT WILL GIVE 
ROUGH IDEA;


1. typedef struct{
char *;
nodeptr next;
} * nodeptr;
what does nodeptr stand for?

2. supposing thaty each integer occupies 4 bytes and each charactrer 
1 byte , what is the output of the following programme?

#include<stdio.h>
main()
{
int a[] ={ 1,2,3,4,5,6,7};
char c[] = {' a','x','h','o','k'};
printf("%d\t %d ", (&a[3]-&a[0]),(&c[3]-&c[0]));
}
ans : 3 3

3. what is the output of the program?

#include<stdio.h>
main()
{
struct s1 {int i; };
struct s2 {int i; };
struct s1 st1;
struct s2 st2;
st1.i =5;
st2 = st1;
printf(" %d " , st2.i);
}

ans: nothing (error)
expl: diff struct variables should not assigned using "=" operator.



4.what is the output of the program?

#include<stdio.h>
main()
{
int i,j;
int mat[3][3] ={1,2,3,4,5,6,7,8,9};
for (i=2;i>=0;i--)
for ( j=2;j>=0;j--)
printf("%d" , *(*(mat+j)+i));
}

ans : 9 6 3 8 5 2 7 4 1

5.

fun(n);
}
int fun( int n)
{
int i;
for(i=0;i<=n;i++)
fun(n-i);
printf(" well done");

}
howmany times is the printf statement executed for n=10?


ans: zero
expl: Befire reaching to printf statement it will goes to infinite loop.


6.what is the output of the program?

main()
{
struct emp{
char emp[];
int empno;
float sal;
};
struct emp member = { "TIGER"};
printf(" %d %f", member.empno,member.sal);


ans: error. In struct variable emp[], we have to give array size.
If array size given
ans is 0, 0.00



7. output of the program?

# define infiniteloop while(1)
main()
{
infiniteloop;
printf("DONE");
}

ans: none
expl: infiniteloop in main ends with ";" . so loop will not reach end;
and the DONE also will not print.

8. output of the program?

main()
{
int a=2, b=3;
printf(" %d ", a+++b);
}

ans:5
expl: here it evaluates as a++ + b. 

9. output of the program?

#define prn(a) printf("%d",a)
#define print(a,b,c) prn(a), prn(b), prn(c)
#define max(a,b) (a<b)? b:a

main()
{
int x=1, y=2;
print(max(x++,y),x,y);
print(max(x++,y),x,y);
}


ans: 3 4 2

10. which of the following is the correct declaration for the function main() ?

ans: main( int , char *[])

11. if ptr is defined as

int *ptr[][100];
which of the following correctly allocates memory for ptr?

ans: ptr = (int *)(malloc(100* sizeof(int));



D.E.shaw 2003

SECTION B (all multiple choices)

1.while((*p++=*q++)!=0){}
is equal to
a) b) c) d)
2.the function strcmp(str1,str2) returns
3. int *x[](); means
4.#define PRINT(int) printf("int=%d",int);
main()
{int x,y,z;
x=03;y=-1;z=01;
PRINT(x^x);
z<<=3;PRINT(x);
y>>=3;PRINT(y);
}
5. struct list{
int x;
struct list *next;
}*head;
the struct head.x =100
above is correct / wrong
6. '-'=45 '/'=47
printfr(%d/n,'-','-','-','-','/','/','/');
o/p =?
12.o/p=?
int i;
i=1;
i=i+2*i++;
printf(%d,i);
8.{ ch='A';
while(ch<='F'){
switch(ch){
case'A':case'B':case'C':case'D':ch++;continue;
case'E':case'F':ch++;
}
putchar(ch);
}
} a)ABCDEF b.EFG c.FG d.error
9. FILE *fp1,*fp2;
fp1=fopen("one","w")
fp2=fopen("one","w")
fputc('A',fp1)
fputc('B',fp2)
fclose(fp1)
fclose(fp2)}
a.error b. c. d.
10. int a=1; b=2; c=3; *pointer;
pointer=&c;
a=c/*pointer;
b=c;
printf("a=%d b=%d",a,b);
a. a=1 b=3
b a=3 b=3
c 3 2
d. error
11.#include<malloc.h>
char *f()
{char *s=malloc(8);
strcpy(s,"goodbye")}
main()
{
char *f()_;
printf("%c",*f()='A');
o/p=?
13. int sum(n)
int n;
if(n<1)return n;
else return(n+sum(n-1))
a 10 b 16 c 14 d 15
14. when a function is recursively called all ,
automatic variables are a. stored in stack b . c. d
15) #define MAN(x,y) (x)>(y)?(x):(y)
{ int i=10;j=5;k=0;
k= MAN(i++,++j)
printf(%d %d %d %d,i,j,k)}
16) a=10;b=5; c=3;d=3;
if(a<b)&&(c=d++)
printf(%d %d %d %d a,b,c,d)
else printf("%d %d %d %d a,b,c,d);

: .............................................
19. what is o/p
#include<stdarg.h>
show(int t,va_list ptr1)
{
int a,x,i;
a=va_arg(ptr1,int)
printf("\n %d",a)
}
display(char)
{int x;
listptr;
va_star(otr,s);
n=va_arg(ptr,int);
show(x,ptr);
}
main()
{
display("hello",4,12,13,14,44);
}
a) 13 b) 12 c) 44 d) 14
.............................................

17. if the following program (my prog)
main(int size of ,char *arg[])
{ while(size of arg) printf("%s",arg[--size of arg)
}
is run from the command line as myprog jan feb mar apr
what would be the o/p
a)myprog jan,feb,mar,apr
b)rev
c)jan,feb,mar,apr
d)error
.............................................

18.what is o/p
main()
{int i=3;
while(i--)
{
int i=100
i--;
printf("%d..",i);
}
}
a) infinite loop
b) error
c) 99..99..99..99
d) 3..22..1..
.............................................
20)what is the o/p of the program
main()
{
int rows=3,colums=4; 
int a[rows][colums]={1,2,3,4,5,6,7,8,9,10,11,12};
i=j=k=99;
for(i=0;i<rows;i++)
for(j=0;j<colums;j++)
if(a[k][j]<k) k=a[i][j];

printf("%d\n",k);
........................................................


Placement Paper

1)minimum #of ip addresses requiered for an router 
ans)2 
2)the worst case booth complexity for 
ans)101010101010101010 
3)disadvantage of pcm 
ans)forgot 
4)two binary 8bits are added overflow will come for 
a)ones complement 
b)twos complement 
c)ones complement with signed magnitude 
c)twos complement with signed magnitude 
5)two 8 bit nuos are multiplied and the result is stored in an rom the size 
of the rom is 
ans)64*64 doubt 
6)how many no of 4x1 muxs are required for making an 16x1 mux 
ans)5 
7)a simple nand gate problem 
ans)simple 
8)the shannon hartley therom give the 
ans)channel capacity with no error 
9)the bandwidth for 500bps is 
ans)1000bps doubt 
10)a problem with lower triangular matrix 
ans)x[i]=b[i]-a[i][j]*x[i] 
11)a c program with 
if x>y 
x=x-y 
else 
y=y-x 
ans)gcd 
12)microwave propogation along the curvature of earth is called 
ans)ductpropogation 
13)a simple bit on recurssion 

14)csma/cd is used in 
ans)ethernet 
15)what is used for knowing its own ip address 
ans)rarp 
16)no signalling is needded to establish connection in 
ans ) ip 
17)a simple problem, on newton rapshon method 
18)(A-B)U(B-A)U(AnB)= 
ANS)AUB 
19) 
if a number is choosen between 100 and 999 includeing these numberrs what is the provbabilty that the number selected does not contain a 7 is 
ans)workitout 
20)a packet trabvelling in the internet forever can be controlled by having the field 
ans)time to live (ttl) 
21)c code with the follwing choices 
a)call with value 
b)call with address 
c)call with value result 
ans)call with value result 
22) when the following sequence is inserted in the binary search tree no of nodes int left subtree and right sub tree is 
ans )7,4 
23)simple problem in recurssion 
x(x(5)) 
ans)17 
24)study about reentrant code reusable code recursive code 
25)given edges nodes and components of a graph find out its rank 
26)in a tree a parent is greater than all its children in folling 
ans)heap 
27)question on pcm signal=3khz 8levels are used 
ans)18000bps 
28)to get the numberr in ascending order the traversal used is 
ans)inorder traversal 
29)a problem in multiprocessing ,multithreading ,multiprogramming 
ans)multithreading

 

1)minimum #of ip addresses requiered for an routerans)22)the worst case booth complexity for ans)1010101010101010103)disadvantage of pcmans)forgot4)two binary 8bits are added overflow will come fora)ones complementb)twos complementc)ones complement with signed magnitudec)twos complement with signed magnitude5)two 8 bit nuos are multiplied and the result is stored in an rom the sizeof the rom is ans)64*64 doubt6)how many no of 4x1 muxs are required for making an 16x1 muxans)57)a simple nand gate problemans)simple8)the shannon hartley therom give theans)channel capacity with no error9)the bandwidth for 500bps is ans)1000bps doubt10)a problem with lower triangular matrixans)x[i]=b[i]-a[i][j]*x[i]11)a c program with if x>yx=x-yelsey=y-xans)gcd12)microwave propogation along the curvature of earth is called ans)ductpropogation13)a simple bit on recurssion14)csma/cd is used inans)ethernet15)what is used for knowing its own ip addressans)rarp16)no signalling is needded to establish connection in ans ) ip17)a simple problem, on newton rapshon method18)(A-B)U(B-A)U(AnB)=ANS)AUB19)if a number is choosen between 100 and 999 includeing these numberrs what is the provbabilty that the number selected does not contain a 7 isans)workitout20)a packet trabvelling in the internet forever can be controlled by having the field ans)time to live (ttl)21)c code with the follwing choicesa)call with valueb)call with addressc)call with value resultans)call with value result22) when the following sequence is inserted in the binary search tree no of nodes int left subtree and right sub tree isans )7,423)simple problem in recurssionx(x(5))ans)1724)study about reentrant code reusable code recursive code25)given edges nodes and components of a graph find out its rank26)in a tree a parent is greater than all its children in follingans)heap27)question on pcm signal=3khz 8levels are usedans)18000bps28)to get the numberr in ascending order the traversal used is ans)inorder traversal29)a problem in multiprocessing ,multithreading ,multiprogrammingans)multithreading This paper comprises of an Aptitude test and C-language test Aptitude-20 questions (2 marks each) C-language - 20 questions(3 marks each)******************************************************APTITUDE TEST20 QUESTIONS;2 MARKS EACHTIME-20MINUTES 1) ONE RECTANGULAR PLATE WITH LENGTH 8INCHES,BREADTH 11 INCHES AND 2 INCHES THICKNESS IS THERE.WHAT IS THE LENGTH OF THE CIRCULAR ROD WITH DIAMETER 8 INCHES AND EQUAL TO VOLUME OF RECTANGULAR PLATE? ANS: 3.5INCHES 2) WHAT IS THE NUMBER OF ZEROS AT THE END OF THE PRODUCT OF THE NUMBERS FROM 1 TO 100 3) in some game 139 members have participated every time one fellow will get bye what is the number of matches to choose the champion to be held? ans: 138 4) one fast typist type some matter in 2hr and another slow typist type the same matter in 3hr. if both do combinely in how much time they will finish. ans: 1hr 12min 5) in 8*8 chess board what is the total number of squares refer odel ans:204 6) falling height is proportional to square of the time. one object falls 64cm in 2sec than in 6sec from how much height the object will fall. 7) gavaskar average in first 50 innings was 50 . after the 51st innings his average was 51 how many runs he made in the 51st innings 8) 2 oranges,3 bananas and 4 apples cost Rs.15 . 3 ornages 2 bananas 1 apple costs Rs 10. what is the cost of 3 oranges, 3 bananas and 3 apples ans Rs 15. 9)in 80 coins one coin is counterfiet what is minimum number of weighings to find out counterfiet coin 10)in a company 30% are supervisors and 40% employees are male if 60% of supervisors are male. what is the probability that a randomly choosen employee is a male or female? 11)statement: all green are blue are blue, all blue are white conclusion: I) some blue are green II) some white are green III)some green are not white IV) all white are blue a) he has given four choices like gre type 12)all teachers are students. some students are girls. this type of questions are there. we cant able to reproduce them.






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