Placement Papers - Caritor

It is believed that they\'ve 25 set of papers. And they distribute different papers in the same examination hall.
     
Total 1 hr     ,40 marks 5 sections, 8     questions each 
     
 1 mark for correct, -.25 for     wrong 
     
1st     section     
     
          /* This section is     damn ..tough, lengthy and time consuming. It is highly recommended to leave this     section or set aside to     last. I am quoting some part of this question so you can easily     identify this     section.. */
     
           It is based on recursive function
       M(a,b,c)- L(a) is if u delete 1st element from it       whatever is left.       N(a,b,c)-L(b) is 1st element of the list.       if (a,b) &a r two lists then M(l1,l2) is ((a,b),a).        X(a,l)=a
         =L(a)
         =M(a,l)        y(a,l)=l
         =L(b)
         =M(l,a)      
Based on this     they gave 8 questions were there
     
2nd section     
     
          This     is about arrangement of dominos
                
6 Dominos are given. Also a figure created using these is also shown. But the alignment of the dominos in the figure is unknown. The question is to found out the possible alignment of the dominos.



  The     multiple choices some what look like this
      
a)                          
                                                                     3                          2