Vreau aceste 2 exercitii...
Urgent!
Dau coroana!
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Răspuns:
1. AUB {a b c d p m n}
A (u intors) B={a p d}
A/B={b c}
B/A={ m n}
2. M={1 2 4 6 7}
N={2 3 5 6 7}