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Expert · Puzzle #607
9
2
9
4
5
2
6
4
5
3
4
1
5
6
7
6
9
2
8
6
7
9
5
4
1
2
7
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston