Question

N=0,1,2,3...9 si N*=1,2,3....?

Answer 1

N* inseamna multimea numerelor naturale nenule, adica diferite de 0.
Deci N* = {1,2,3,...}
N* = N \ {0}

N = {0,1,2,3,....}, pana la infinit


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