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  3  6  16  7  2  8  16  9  20 
2  1  11  10  14  10  13  7  2  16  11 
3  9  7  9  1  1  10  16  8  11  14 
4  12  17  9  14  17  12  20  15  10  12 
5  19  11  16  20  15  11  12  8  10  16 
6  6  6  12  18  19  4  6  10  17  4 
Which group of four numbers, arranged in a square, has the smallest total?
Topics: Starter  Arithmetic  Mental Methods
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