1.

Group the given figures into three classes using each figure only once.     (SOF NSO 2016)

A. 1,5, 6; 2, 3, 4; 7, 8, 9                           
B. 1,4, 7; 2, 5, 8; 3, 6,9                        
C. 1, 2, 3; 4, 5, 8; 6, 7,9                                  
D. 1, 3, 5; 2, 4, 8; 6, 7, 9                          
Answer» B. 1,4, 7; 2, 5, 8; 3, 6,9                        


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