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Evil · Puzzle #490
6
5
2
9
8
7
4
2
8
3
5
6
5
1
3
1
4
3
8
7
3
7
5
2
8
"The only way to learn mathematics is to do mathematics." — Paul Halmos
"The only way to learn mathematics is to do mathematics." — Paul Halmos
"The only way to learn mathematics is to do mathematics." — Paul Halmos
"The only way to learn mathematics is to do mathematics." — Paul Halmos