Patni Placement Paper

Sample Questions

1. Number of Weights needed for weighing 1 to 40 kgs?   27 9 3 1 ans : 4 

2. Venn diagram problem venndiagram find the   formulae. Ans. (AB+BC+CA)(A'+B'+C') 

3. a +2b=6,ab=4 2/a + 1/b=?   ans : 3/2 

4. Age of 4 persons given in a relation find smallest age?   ans : meera

5.  find floating point result   (float)25/2, float(25/2), 25/(float)2 ,25/2  ans: 1 & 3 

6. find equivalent *(*(s+x)+y) ==> s[x][y]  ans : content of s[x][y]                    

7. find invalid statement : int a[3] 
     1. scanf("%d",a[2]); 
     2. scanf("%d",&a[2]); 
     3. scanf("%d",a); 
     4. all  
     ans : 1

8. One palindrome programme was given in recursion  ans : pal(f++,t--) 

9. main program: 
    i=foo(2) foo(int s) 
     { 
    if(!s) 
     return s; 
     else 
     { int i=5; return i} 
     } 
     ans : 5 

10.  k=0 i=0j=1; 
      if(i0)&&(k=2) printf(k); 
      if(i0|| k=0) 
     printf(k)  
     ans: 2 2

11. cube is moulded as a sphere. find the ratio of   cube of surface area of sphere to squareof surface area of cube. ans pi/6

12. Teacher in math=4 p6=3 kmistry=3 each can take 2  subject minimum teacher needed for school  ans : 5

13. 3 vowels,4 consonents formulate string of 6  letters with a vowel in a string max no of string ?  ans: 5040

14. binnary of .6875.  0.1011                                                                              

15. man walks at speed of 8 km/h 300 mtrs length train crosses man in 30  sec from back, find speed of train  ans: 44 km/hr 

16.  main() 
      { 
      char ch; 
      int count=0; 
      while((ch = getch() != '\n') 
      { 
      while (ch == ' ') 
      ch = getch(); 
     while((ch!=' ') && (ch!='.')) 
      { 
      count++; 
     ch=getch(); 
      } 
      }  
      ans : 11 

17. Radius of a circle is 5cm , if we draw a  rectangle of maximum size,  what is the area of rectangle ans : 50 cmsq 

18. main() 
      { 
      int i; 
     for(i=0;i<3;i++) 
     switch(i) 
      { 
      case 1: printf("%d",i); 
      case 2 : printf("%d",i);                                                                               
      default: printf("%d"i); 
      } 
      } 
      ans 011122 

19. There r 3 boys 7 4 girls; Howmany ways they r arranged such that boys should be always together ???Ans: 240

20. If n.....; What is the max no that divides  (Ans: 8)

21. A,B,C,D has values from 0 to 9.... What is D ?  (Ans: 6)

22. A wodden piece taken which is in shape of Triangle , of 10 X 24 X 26 ; Then cut at some ..... which is rearranged
    in rectangle format; so what is ... (Ans: 5)

23. There r 5 numbers. The average is 25; the highest value excluded then average is 25, if the lowest is excluded the avg is ..Then average of remaining is ? (Ans: 30)                                                         

24. The square is cut such that the end point of one side is shown in fig.. This is repeated two times, what is the area ??
    (Ans: 3.61)

25. The route problem... what is the shortest rout to p1 to p2... (There may be circle figure......) (Ans: From p1 to 0 & form 0 to p8)

26. Two motor cycles A & B are started from one point at 4 Kmph & 6 Kmph; After 45 min B starts returning , at what
    time they will reach.... (Ans: 3.6 km)

27. All integer from 0 to 9, what is the smallest no perfectly devides; (Ans: c)

28. Some figure (Triangle in a rectangle)..... What is perimeter if triangle  (Ans: 20)