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Expert · Puzzle #786
7
8
8
6
4
5
9
2
3
1
3
7
3
8
1
1
4
2
5
9
3
2
5
6
Puzzle-solving is used as therapy for anxiety: the focused concentration it requires quiets the mind's rumination.
Puzzle-solving is used as therapy for anxiety: the focused concentration it requires quiets the mind's rumination.
"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding." — William Paul Thurston