A) 1, 2, 3; 4, 5, 6; 7, 8, 9
B) 1, 6, 7; 2, 4, 9; 3, 5, 8
C) 1, 2, 4; 3, 5, 7; 6, 8, 9
D) 1, 8. 9; 2, 4, 6; 3, 5, 7
Correct Answer: A
Solution :
Each group in the answer represents the equal number of filled circles.You need to login to perform this action.
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