1.

Which of the pairs of numbers in the given options should be placed at x and y, so that each row of four numbers -across, down and diagonally add up to 20? 3 7 6 4 6 x 3 7 4 6 y 3 7 3 4 6

A.  4, 6                
B.    4, 7                
C.    3, 7                
D.    3, 6
Answer» C.    3, 7                


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