Here I am giving you question papers for placement examination of Tech Mahindra company in a file attached with it so you can get it easily.

Tech Mahindra Exam placement papers

Tech Mahindra Technical Paper 1
C-Test Paper
1. #include
* What is wrong in the following problem
main() {
int i,j;
j = 10;
i = j++ - j++;
printf("%d %d", i,j);
}ans: 0, 12
2.#include
* What is the output of the following problem
main() {
int j;
for(j=0;j<3;j++)
foo();
}
foo() {
static int i = 10;
i+=10;
printf("%d\n",i);
}
/* Out put is (***since static int is used i value is retained between
* 20 function calls )
* 30
* 40
*/
3.#include
#include
#include
/* This is asked in PCS Bombay walk-in-interview
* What is wrong in the following code
*/
main()
{char *
c;
c = "Hello";
printf("%s\n", c);
}
/*ans:- Hello, The code is successfully running */
4. #include
/* This problem is given in PCS BOMBAY walk-in-interview.
* What is the final value of i and how many times loop is
* Executed ?
*/
main()
{int i,j,k,l,lc=0;
/* the input is given as 1234 567 */
printf("Enter the number string:<1234 567 \n");
scanf("%2d%d%1d",&i,&j,&k);
for(;k;k--,i++)
for(l=0;l
printf("%d %d\n",i,l);}
printf("LOOPS= %d\n", lc-1);
}/* Ans: i
=
16, and loop is executed for 169 times */
5.#include
/* This is given in PCS Bombay walk-in-interview */
/* What is the output of the following program */
main() {
union {
int a;
int b;
int c;
} u,v;
u.a = 10;
u.b = 20;
printf("%d %d \n",u.a,u.b);
}/* Ans :
The latest value assigned to any of the union member
will be present in the union members so answer is
20 20
*/
6.#include
main()
{
float i, j;
scanf("%f %f", &i, &j);
printf("%.2f %.3f", i, j);
}
/Ans:- 123.34 3. 234 */
7.#include
/* This is given in PCS Bombay walk-in-interview
* What is the out put of the following problem ?
*/
main()
{char *
str =
"
12345";
printf("%c %c %c\n", *str, *(str++), *(str++));
}/* Ans: It is not 1
2
3
* But it is 3 2 1 Why ??
*/
8.#include
/* This problem is asked in PCS Bombay Walk-in-interview
* Write a macro statement to find maximum of a,b
*/
#define max(a,b) (ab)?a:b
main()
{int a,b;
a=3;
b=4;
printf("%d",max(a,b));
}/* Ans is very simple the coding is just for testing it
and output is 4 */
~
9.#include
/* This problem is asked in PCS Bombay
* What is the output of the following coding
*/
main()
{int len=4;
char *st="12345678";
st = st -len;
printf("%c\n",*st);
}/* Ans :
It will print some junk value */
~
10.#include
main()
{
func(1);
}
func(int i){
static char *str ={ "One","Two","Three","Four"};
printf("%s\n",str[i++]);
return;
}/* Ans:- it will give warning because str is pointer to the char but
it is initialized with more values
if it is not considered then the answer is Two */
11.
#include
main()
{int i;
for (i=1;i<100; i++)
printf("%d %0x\n",i,i);
}/* Ans:- i
is from 1
to 99 for the first format,
for the second format 1to9, ato f, 10 to 19,1ato1f, 20 to 29, etc */
12.#include
/* This problem is asked in PCS Bombay walk-in-interview
* In the following code please write the syntax for
* assing a value of 10 to field x of s and id_no 101 of s
*/
struct {
int x;
int y;
union {
int id_no;
char *name;
}b;
}s,*st;
main()
{s
t = &s;
st-x=10;
st-b.id_no = 101;
printf("%d %d\n",s..x,s.b.id_no);
}/* Ans: The answer is st-x=10;
* st-b.id_no=101;
*/
13.#include
/* This problem was asked in PCS Bombay in a walk-in-interview
* Write a recursive function that calculates
* n * (n-1) * (n-2) * ....... 2 * 1
*/
main() {
int factorial(int n);
int i,ans;
printf("\n Enter a Number:");
scanf("%d",&i);
ans = factorial(i);
printf("\nFactorial by recursion = %d\n", ans);
}int factorial(int n)
{if (
n
<= 1) return (
1);
else
return ( n * factorial(n-1));
}
~
14.#include
/* This problem is asked in PCS Bombay walk-in-interview
* What is the output of the following problem
*/
main(){
int j,ans;
j = 4;
ans = count(4);
printf("%d\n",ans);
}int count(int i)
{if (
i
<
0) return(i);
else
return( count(i-2) + count(i-1));
}
/* It is showing -18 as an answer */
15.#include
main()
{int i=4;
if(i=0)
printf("statement 1");
else
printf("statement 2");
}/* statement 2 */
This is pcsb paper.
1. #include
* What is wrong in the following problem
main() {
int i,j;
j = 10;
i = j++ - j++;
printf("%d %d", i,j);
}ans: 0, 12
2.#include
* What is the output of the following problem
main() {
int j;
for(j=0;j<3;j++)
foo();
}
foo() {
static int i = 10;
i+=10;
printf("%d\n",i);
}
/* Out put is (***since static int is used i value is retained between
* 20 function calls )
* 30
* 40
*/
3.#include
#include
#include
/* This is asked in PCS Bombay walk-in-interview
* What is wrong in the following code
*/
main()
{char *
c;
c = "Hello";
printf("%s\n", c);
}/*ans:- Hello, The code is successfully running */
4. #include
/* This problem is given in PCS BOMBAY walk-in-interview.
* What is the final value of i and how many times loop is
* Executed ?
*/
main()
{int i,j,k,l,lc=0;
/* the input is given as 1234 567 */
printf("Enter the number string:<1234 567 \n");
scanf("%2d%d%1d",&i,&j,&k);
for(;k;k--,i++)
for(l=0;l
printf("%d %d\n",i,l);}
printf("LOOPS= %d\n", lc-1);
}/* Ans: i
=
16, and loop is executed for 169 times */
5.#include
/* This is given in PCS Bombay walk-in-interview */
/* What is the output of the following program */
main() {
union {
int a;
int b;
int c;
} u,v;
u.a = 10;
u.b = 20;
printf("%d %d \n",u.a,u.b);
}/* Ans :
The latest value assigned to any of the union member
will be present in the union members so answer is
20 20
*/
6.#include
main()
{
float i, j;
scanf("%f %f", &i, &j);
printf("%.2f %.3f", i, j);
}
/Ans:- 123.34 3. 234 */
7.#include
/* This is given in PCS Bombay walk-in-interview
* What is the out put of the following problem ?
*/
main()
{char *
str =
"
12345";
printf("%c %c %c\n", *str, *(str++), *(str++));
}/* Ans: It is not 1
2
3
* But it is 3 2 1 Why ??
*/
8.#include
/* This problem is asked in PCS Bombay Walk-in-interview
* Write a macro statement to find maximum of a,b
*/
#define max(a,b) (ab)?a:b
main()
{int a,b;
a=3;
b=4;
printf("%d",max(a,b));
}/* Ans is very simple the coding is just for testing it
and output is 4 */
~
9.#include
/* This problem is asked in PCS Bombay
* What is the output of the following coding
*/
main()
{int len=4;
char *st="12345678";
for(i=0; i<6; i++)
st = st -len;
printf("%c\n",*st);
}/* Ans :
It will print some junk value */
~
10.#include
main()
{
func(1);
}
func(int i){
static char *str ={ "One","Two","Three","Four"};
printf("%s\n",str[i++]);
return;
}/* Ans:- it will give warning because str is pointer to the char but
it is initialized with more values
if it is not considered then the answer is Two */
11.
#include
main()
{int i;
for (i=1;i<100; i++)
printf("%d %0x\n",i,i);
}/* Ans:- i
is from 1
to 99 for the first format,
for the second format 1to9, ato f, 10 to 19,1ato1f, 20 to 29, etc */
12.#include
/* This problem is asked in PCS Bombay walk-in-interview
* In the following code please write the syntax for
* assing a value of 10 to field x of s and id_no 101 of s
*/
struct {
int x;
int y;
union {
int id_no;
char *name;
}b;
}s,*st;
main()
{s
t = &s;
st-x=10;
st-b.id_no = 101;
printf("%d %d\n",s.x,s.b.id_no);
}/* Ans: The answer is st-x=10;
* st-b.id_no=101;
*/
13.#include
/* This problem was asked in PCS Bombay in a walk-in-interview
* Write a recursive function that calculates
* n * (n-1) * (n-2) * ....... 2 * 1
*/
main() {
int factorial(int n);
int i,ans;
printf("\n Enter a Number:");
scanf("%d",&i);
ans = factorial(i);
printf("\nFactorial by recursion = %d\n", ans);
}int factorial(int n)
{if (
n
<= 1) return (
1);
else
return ( n * factorial(n-1));
}
~
14.#include
/* This problem is asked in PCS Bombay walk-in-interview
* What is the output of the following problem
*/
main(){
int j,ans;
j = 4;
ans = count(4);
printf("%d\n",ans);
}int count(int i)
{if (
i
<
0) return(i);
else
return( count(i-2) + count(i-1));
}
/* It is showing -18 as an answer */
15.#include
main()
{int i=4;
if(i=0)
printf("statement 1");
else
printf("statement 2");
}/* statement 2
*/

Tech Mahindra Exam placement papers

1. Which of the following statement(s) is(are) not true
a. Literate workers have small families than illiterate workers.
b. Families with 2 or less than 2 children are commoner than families with 3 or more children.
c. 2 children families constitute 60% of the families of workers.
d. More the no. of children a worker has the more illiterate he is.
e. None the above statement is true. Ans : e
2. Of a mutual instrument vibrate 6,8 & 12 intervals respectively. If all three vibrate together what
is the time interval before all vibrate together again? Ans : 1/2 sec HCF of DR
3. Certain no. of men can finish a piece of work in 10 days. If however there were 10 men less it
will take 10 days more for the work to be finished. How many men were there originally. Ans :
110 men
4. In simple interest what sum amounts of Rs.1120/- in 4 years and Rs.1200/- in 5 years. Ans :
Rs.800/-
Sum of money at compound interest amounts of thrice itself in 3 years. In how many years will
it take 9 times itself. Ans : 6
5. Two trains in the same direction at 50 & 32 kmph respectively. A man in the slower train
observes the 15 seconds elapse before the faster train completely passes him. What is the length
of faster train ? Ans : 75m
How many mashes are there in a sq. m of wire gauge. Each mesh being 8mm long X 5mm
width
Ans : 25000
6. x% of y is y% of ? Ans : x
7. The price of sugar increases by 20%, by what % house-wife should reduce the consumption of
sugar so that expenditure on sugar can be same as before Ans : 16.66
8. A man spending half of his salary for house hold expenses, 1/4th for rent, 1/5th for travel
expenses, a man deposits the rest in a bank. If his monthly deposits in the bank amount 50.
What is his monthly salary ?
Ans : 1000
9. The population of a city increases @ 4% p.a. That is an additioanl annual increase of 4% of the
population due to this influx of job seekers, the % increase in population after 2 years is
10.The ratio of no. of boys & girls in a school is 3:2 Out of these ?% the boys & 25% of girls are
scholarship holders. % of students who are not scholarship holders.?
11.15 Men take 21 days of 8 hrs. each to do a piece of work. How many days of 6 hrs. each would
do if 21 women take. If 3 women do as much work of 2 men. Ans : 30
12.A cylinder ingot 6cms in diameter and 6 cms in height is and spheres all of the same size are
made from the material obtained.what is the diameter of each sphere? Ans :3cms
13.Rectangular plank of sqrt(2)meters wide can be placed so that it is on either side of the diagonal
of a square shown below.what is the area of the plank? Ans :7sqrt(2) fig no-
14.The difference b/w the compound interest payble half yearly and the simple interest on a certain
sum cont out at 10% p.a for 1 year is Rs 25 what is the sum Ans:10,000
15.what is the smallest n0 by which 2880 must be divided in order to make it a perfect square ?
a)3 b)4 c)5 d) 6 e)8 Ans: 3
16.A father is 30 times more than his son however he will be only thrice as old as the son what is
father's present age ?Ans : 40
17.An article sold at a profit of 20% if both the c.p & s.p were tobe Rs.20/- the profit would be
10% more. What is the c.p of that article? Ans : 1% loss
18.How can a process be started automatically in UNIX ? ANS : Through CRONTAB { options
were crontab, inittab, and two more }
19.What is the meaning of run level 6 ? ANS. Reboot
20.How can you determine which file has generated the CORE ?
Options were..
1.ps -ef | grep core
2.ps -ef | grep <executable file name > Freshersworld.com
3.pfile core
4.filec core
21.Diff.between inlinefunction((++)-macns(c)
22.3 to 4 questions on conditional operator :?:
23.Write a macro for sqaring no.
24.Trees -3 noded tree ( 4 to 5 questions fundamentals) Maximum possible no.of arrnging these
nodes
25.Arrange the nodes in depth first order breadth first order
26.Linked lists Q) Given two statments
27.Allocating memory dynamiccaly
28.Arrays Tree the above both and find the mistake
29.Pointers (7 to 8 questions) Schaum series Pointer to functions, to arrays 4 statements
->meaning,syntax for another 4 statements
30.Booting-def(When you on the system the process that takes place is ------
31.Type of global variable can be accessible from any where in the working environment ( external
global variable)
32.Which of the following can be accessed randomly Ans. a. one way linked list
b. two way "
c. Arrays
d. Trees
33.Write a class for a cycle purchase(data items req.)