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va rog ajutatima ka al treilea ex

Va Rog Ajutatima Ka Al Treilea Ex class=

Răspuns :

12apartine multimii{10,11,12}
{1,8,10,15}......{8,1,15,10}
17 apartine multimii{13,15,17,19}
{2,3,6,8}\{5,2,1,3}={6,8}
6 apartine {2,5,6,7} intersectat cu {4,1,6,8,10}={2,5,6,7,4,1,8,10}