Question

Fie multimile A=[11,13,21,31,49,55], B={13,31,48,55} C={11,13,21,48}. Aflati


a)AUB b)ANB c)AUC d)ANC
e)CUB f)CNB g)AU(BUC) h)AU(BNC)


dau coroana ajutattima urgent va rog

Answer 1

a) AUB = {11,13,21,31,49,55,48,55}
b) A∩B ={13,31} 
c) AUC ={11,13,21,31,49,55,48} 
d) A∩C={11,13,21} 
e) CUB={13,31,48,55,11,21} 
f) C∩B ={13,48} 
g) AU(BUC) = AUBUC ={11,13,21,31,48,49,55} 
h)A U (B∩C) ={13,48,11,21,31,49,55}