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Hard · Puzzle #534
5
7
8
2
4
8
5
1
7
1
2
3
2
6
2
8
1
6
3
5
4
6
8
4
5
7
"Learning never exhausts the mind." — Leonardo da Vinci
"Learning never exhausts the mind." — Leonardo da Vinci
"The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful." — Henri Poincaré
"The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful." — Henri Poincaré