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Hard · Puzzle #536
7
5
4
2
9
1
8
8
6
9
1
2
5
3
1
7
2
3
1
4
2
6
1
8
4
7
"Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great deal of imagination." — Sofia Kovalevskaya
"Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great deal of imagination." — Sofia Kovalevskaya
"What we know is a drop; what we don't know is an ocean." — Isaac Newton
"What we know is a drop; what we don't know is an ocean." — Isaac Newton