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Expert · Puzzle #405
4
2
2
4
6
5
8
1
9
4
5
8
2
7
6
6
5
4
1
3
1
6
7
5
9
"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
"Everything should be made as simple as possible, but not simpler." — Albert Einstein
"Everything should be made as simple as possible, but not simpler." — Albert Einstein