h3. Explicaţie
Primul exemplu : ${1}, {2}, {3}, {4}, {5}, {1,3}, {1,4}, {1,5}, {1,3,5}, {2,4}, {2,5}, {3,5}$
Al doilea exemplu : ${1}, {2}, {3}, {4}, {5}, {6}, {7}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7}, {1,3,5}, {1,3,6}, {1,3,7}, {1,4,6}, {1,4,7}, {1,5,7}, {1,3,5,7}, {2,4}, {2,5}, {2,6}, {2,7}, {2,4,6}, {2,4,7}, {2,5,7}, {3,5}, {3,6}, {3,7}, {3,5,7}, {4,6}, {4,7}, {5,7}$
Primul exemplu : ${1}, {2}, {3}, {4}, {5}, {1, 3}, {1,4}, {1,5}, {1, 3, 5}, {2, 4}, {2, 5}, {3, 5}$
Al doilea exemplu : ${1}, {2}, {3}, {4}, {5}, {6}, {7}, {1, 3}, {1,4}, {1,5}, {1,6}, {1,7}, {1,3,5}, {1,3,6}, {1,3,7}, {1,4,6}, {1,4,7}, {1,5,7}, {1,3,5,7}, {2, 4}, {2, 5}, {2,6}, {2,7}, {2,4,6}, {2,4,7}, {2,5,7}, {3, 5}, {3,6}, {3,7}, {3,5,7}, {4,6}, {4,7}, {5,7}$
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