Question

Fie multimea A={ n/napartine lui N,n/36si 2/n} si B={n/n apartine N,n $\leq$25,si n divizibil cu 4}
a)Scrieti multimile prin enumerarea elementelor.
b)Calculati AUB, A/B,A intersectat cu B,B/A,
c)In multimea B modificati una dintre conditii,astfel incat sa avem card B=13

Answer 1

a) A={2,4,6,12,18,36}
B= {0,4,8,12,16,20,24}

b) AUB= {0,2,4,6,8,12,16,18,24,36}
A/B= {6,18,36}
A n B ={4,12}
B/A= {0,8,16,20,24}

c) B= {n/napartine N, n≤25, n divizibil cu 2}
B={0,2,4,6,8,10,12,14,16,18,20,22,24}