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fie multimile a =11 13 21 31 49 55 b 13 31 48 55 si c=11 13 21 48 aflati a reuniunea b


Răspuns :

a reunit cu b = 11 13 21 31 48 49 55
a=11,13,21,31,49,55
b=13,31,48,55
ab=13,31,55