1.

Group the given figures into three classes using each figure only once. (SOF NSO 2017)

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


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