Which group of four numbers, arranged in a square, has the largest total?
A  B  C  D  E  F  G  H  I  J  
1  19  9  9  8  1  6  4  18  1  11 
2  6  3  17  17  13  11  13  14  4  7 
3  3  2  6  16  18  7  15  13  12  18 
4  9  16  6  5  3  5  14  11  6  6 
5  10  2  16  3  20  19  2  16  6  20 
6  10  12  17  18  16  19  1  17  6  10 
Which group of four numbers, arranged in a square, has the smallest total?
Topics: Starter  Arithmetic  Mental Methods
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