Q:
      
      
         
            
Group the given figures into three classes using each figure only once.

         
       
      
         
            
               | A) 1,4,7 ; 2,5,9 ; 3,8,6 | B) 2,6,9 ; 1,4,7 ; 5,8,3 | 
            
               | C) 1,4,7 ; 2,3,6 ; 5,8,9 | D) 3,5,1 ; 4,7,8 ; 6,2,9 | 
         
       
      
         
            
               | A) 1,4,7 ; 2,5,9 ; 3,8,6 | 
            
               | B) 2,6,9 ; 1,4,7 ; 5,8,3 | 
            
               | C) 1,4,7 ; 2,3,6 ; 5,8,9 | 
            
               | D) 3,5,1 ; 4,7,8 ; 6,2,9 | 
         
       
      
          
      
      
          Answer & Explanation
         Answer: C) 1,4,7 ; 2,3,6 ; 5,8,9         
         
Explanation: 5,8,9 are objects having both base as well as upper lid. 
2,3,6 are objects having base but not upper lid. 
1,4,7 are objects which have neither a base nor an upper lid attached to them.
       
      
      
      
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